So, we’re talking about roof decking today. It might not be the most glamorous part of your roof, but honestly, it’s super important. Think of it as the foundation for everything else that goes on top. Without good roof decking, the whole system can have problems, and nobody wants that. We’ll break down why this layer matters and what to look out for.
Key Takeaways
- Roof decking, often made of plywood or OSB, forms the solid base for your entire roofing system.
- It plays a big role in how your roof handles different kinds of weight, like snow, wind, and the materials themselves.
- The type of decking material, its thickness, and how it’s put up all affect how well your roof performs.
- Problems like water damage or poor installation can weaken the roof decking, leading to bigger issues down the road.
- Good roof decking is key for keeping your home dry, safe, and energy-efficient.
Understanding Roof Decking’s Foundational Role
Think of roof decking as the unsung hero of your roof system. It’s not the part you see from the street, but it’s absolutely critical for everything else to work right. Basically, it’s the structural base that everything else gets attached to. Without a solid deck, your shingles, metal panels, or whatever else you have on top wouldn’t have anything to hold onto, and the whole roof would be in trouble.
The Structural Base of the Roofing System
This layer is what connects your roof’s framing – like rafters or trusses – to the rest of the roofing materials. It creates a continuous surface that’s strong enough to handle all sorts of forces. It’s the first line of defense, providing the solid platform that allows the roof to do its job of protecting your home.
Plywood and OSB as Common Decking Materials
When people talk about roof decking, they’re usually talking about either plywood or Oriented Strand Board (OSB). Both are made from wood products, but they’re put together differently. Plywood is made from thin layers of wood veneer glued together, while OSB is made from wood strands or flakes compressed and glued in layers. They both serve the same purpose, but there are differences in how they perform, especially when they get wet.
Supporting Subsequent Roofing Layers
Every single piece of your roofing system, from the underlayment to the final shingles, relies on the decking underneath. It’s the foundation that distributes the weight of the roofing materials, plus any snow, rain, or wind that hits the roof, down to the framing and then to the rest of the house. If the decking is weak or damaged, it can’t do this job properly, which can lead to bigger problems down the road.
- Weight Distribution: Spreads the load evenly.
- Attachment Surface: Provides a stable base for fasteners.
- Structural Integrity: Contributes to the overall strength of the roof.
The performance of your entire roof system hinges on the quality and condition of the decking beneath it. It’s the hidden support that makes everything else possible.
Roof Decking and Load Distribution Principles
The Structural Base of the Roofing System
Roof decking, often made from plywood or oriented strand board (OSB), acts as the solid foundation for your entire roof. It’s not just a surface to nail shingles onto; it’s a critical structural component. Think of it like the subfloor in your house – it’s what everything else rests on and what transfers weight down to the rest of the building.
Plywood and OSB as Common Decking Materials
These wood-based panels are the go-to materials for roof decking for good reasons. They’re relatively affordable, easy to work with, and provide a stable, continuous surface. Plywood is made from thin layers of wood veneer glued together, while OSB is made from wood strands compressed and bonded with adhesives. Both have their pros and cons, and the choice often comes down to cost, availability, and specific performance needs.
Supporting Subsequent Roofing Layers
Beyond just being a base, the decking has to handle a lot. It supports the weight of the underlayment, the shingles or metal panels, and anything else you put on top. It also needs to be strong enough to resist the forces from wind and snow. If the decking isn’t up to par, the whole roofing system is at risk.
Transferring Environmental Loads to Framing
This is where the real magic happens. When wind blows, snow piles up, or even when you walk on the roof, those forces don’t just stay on the surface. The decking’s job is to grab that load and spread it out evenly across the underlying rafters or trusses. This distribution is key to preventing any single point from getting overloaded and failing. It’s like a team effort, with the decking acting as the captain, directing the load to the rest of the structural crew.
Distributing Dead and Live Loads
Roofs deal with two main types of loads: dead loads and live loads. Dead loads are the permanent weights, like the decking itself, the roofing materials, and any insulation. Live loads are temporary and variable, such as snow, ice, rain, and wind. The decking must be robust enough to handle both, ensuring that even under the heaviest snowstorm, the weight is managed effectively and doesn’t cause structural damage.
Impact of Roof Decking on Structural Integrity
Choosing the right decking material and installing it correctly has a direct impact on the overall structural integrity of your home. A well-performing roof deck means your roof can withstand the elements for years to come. Conversely, issues like improper fastening, water damage, or using undersized panels can lead to sagging, leaks, and even more serious structural problems down the line. It’s a foundational element that shouldn’t be overlooked.
The Interplay Between Roof Decking and Framing
The Structural Base of the Roofing System
Roof decking, often made from plywood or oriented strand board (OSB), isn’t just a flat surface laid over the roof’s skeleton. It’s a really important part of how the whole roof structure works. Think of it as the skin that holds everything together. This decking is directly attached to the rafters or trusses, which are the main structural beams that give the roof its shape and strength. Without this connection, the framing would just be a collection of separate pieces, unable to effectively handle any weight or pressure.
Plywood and OSB as Common Decking Materials
When we talk about roof decking, plywood and OSB are the usual suspects. They’re chosen because they’re strong, relatively inexpensive, and easy to work with. Plywood is made by layering thin sheets of wood veneer, while OSB is made from compressed wood strands. Both materials are designed to spread the loads they encounter – like wind, rain, or snow – across the framing members underneath. This distribution is key to preventing any single beam from getting overloaded.
Supporting Subsequent Roofing Layers
Beyond just connecting to the framing, the decking provides a solid, continuous surface for all the other roofing materials. This includes the underlayment, which is like a secondary water barrier, and the final roof covering, like shingles or metal panels. If the decking is weak, uneven, or has gaps, it can cause problems for these layers. For instance, shingles might not lay flat, leading to premature wear or leaks. The integrity of the decking directly impacts the performance and lifespan of the entire roofing system.
Here’s a quick look at how decking connects to the framing:
| Framing Member | Decking Material | Connection Method |
|---|---|---|
| Rafters | Plywood/OSB | Nails or screws |
| Trusses | Plywood/OSB | Nails or screws |
This connection needs to be secure. Loose decking can lead to noise, sagging, and eventually, structural failure. It’s not just about putting boards down; it’s about creating a unified structure that can stand up to the elements for years to come.
Material Properties Influencing Roof Decking Performance
Plywood vs. Oriented Strand Board (OSB)
When we talk about roof decking, plywood and OSB are the two big players. They both do the job of providing a solid base for your shingles or other roofing materials, but they’re made differently, and that makes a difference in how they perform.
Plywood is made by layering thin sheets of wood veneer, with the grain of each layer running in a different direction. This cross-graining gives it a lot of strength and makes it pretty stable. OSB, on the other hand, is made from wood strands or flakes that are compressed and glued together. Think of it like a really dense particle board, but with larger pieces of wood.
Generally, plywood tends to be a bit more resistant to moisture and can hold fasteners better than OSB, especially around the edges. However, OSB has gotten a lot better over the years, and it’s often more affordable. It’s also made from smaller trees, which can be a more sustainable choice. The key thing is that both need to be installed correctly and protected from the elements during construction.
Thickness and Span Ratings
The thickness of your roof decking matters a lot. Thicker panels can span longer distances between the rafters or trusses without sagging. This is where ‘span ratings’ come in. You’ll see numbers like ‘2-4’ or ‘3-2’ on OSB panels, for example. The first number tells you the maximum span in inches for roof decking, and the second number is for floor decking. So, a ‘2-4’ rating means it’s designed for rafters spaced 24 inches apart.
Using the wrong thickness or span rating can lead to problems down the road. If the decking isn’t strong enough for the distance between the supports, it can sag. This puts extra stress on your roofing materials, making them more likely to fail prematurely. It’s not just about looks; it’s about structural integrity.
Here’s a quick look at typical recommendations:
| Rafter Spacing (inches) | Minimum Plywood Thickness (inches) | Minimum OSB Thickness (inches) |
|---|---|---|
| 16 | 1/2 | 7/16 |
| 24 | 5/8 | 7/16 (if rated 2-4) or 15/32 |
| 32 | 3/4 | 7/16 (if rated 3-2) or 15/32 |
Note: Always check manufacturer specifications and local building codes, as these are general guidelines.
Moisture Resistance and Durability
Roofs have to deal with a lot of moisture, whether it’s rain, snow, or even just humidity. How well your decking handles water is a big deal for its lifespan and the overall health of your roof system.
Some decking materials are treated to resist moisture better than others. For instance, exterior-grade plywood is designed for outdoor use, and some OSB products have special moisture-resistant coatings. Even with treated materials, though, prolonged exposure to standing water or leaks can cause delamination (layers separating) or swelling.
The durability of roof decking isn’t just about resisting water; it’s also about its ability to withstand physical stress over time. Things like foot traffic during installation, the weight of roofing materials, and even impacts from hail can affect its integrity. Choosing a material that’s tough and can handle these conditions is key to a long-lasting roof.
When decking gets wet and stays wet, it can start to rot. This creates soft spots, which can eventually lead to structural failure. It also creates a perfect environment for mold and mildew to grow, which isn’t good for indoor air quality or the health of the building materials. So, while the initial cost might be a factor, thinking about how the material will hold up against moisture and wear over the years is really important.
Installation Techniques for Optimal Roof Decking Function
Getting the roof decking installed right is super important. It’s not just about slapping some boards up there; there’s a method to the madness that makes sure your roof actually does its job. If it’s not done correctly, you can end up with all sorts of problems down the line, from leaks to structural issues. It really comes down to a few key areas: how you attach the decking, how you space it out, and how you handle the seams.
Proper Fastening and Spacing
This is where the decking really connects to the roof’s skeleton, the rafters or trusses. You can’t just use a few nails here and there. The goal is to make sure the decking acts as one solid piece, transferring all those wind and snow loads down to the framing. Too few fasteners, or fasteners placed too far apart, and you risk the decking flexing or even coming loose. On the flip side, over-nailing can sometimes split the wood, which isn’t good either.
- Nail Size and Type: Always use the size and type of nails recommended by the decking manufacturer and your local building codes. Usually, this means ring-shank nails for better grip.
- Spacing: The edges of the decking panels need to be nailed closer together than the field (the middle part of the panel). This is because the edges are where the panels meet and transfer loads to the joists.
- Edge vs. Field Nailing: Typically, you’ll see nails every 6 inches along the edges and every 12 inches in the field.
Seam Overlap and Expansion Gaps
When you lay down those big sheets of plywood or OSB, they don’t just butt up against each other perfectly. Wood expands and contracts with changes in temperature and humidity. If you don’t leave a little room for that movement, the decking can buckle or warp, creating an uneven surface and potentially damaging the layers above it. That’s where expansion gaps come in. They’re small, controlled spaces between the panels.
Leaving proper expansion gaps is a small detail that makes a huge difference in the long-term performance of your roof. It allows the materials to move naturally without building up stress.
Integration with Underlayment and Flashing
Once the decking is down and secured, the next layers are critical. The underlayment, often a felt or synthetic material, goes on top of the decking. It’s like a secondary water barrier. Then comes the flashing, especially around tricky spots like chimneys, vents, and where different roof planes meet. The way the underlayment and flashing are installed directly over the decking dictates how well water is managed. If there are gaps or poor overlaps in these layers, water can seep down to the decking, causing rot and other issues, even if the decking itself was installed perfectly.
- Underlayment Overlap: Underlayment is typically installed in horizontal laps, starting from the bottom edge of the roof and working up. Each layer overlaps the one below it to shed water.
- Flashing Integration: Flashing needs to be integrated correctly with both the decking and the underlayment, extending up walls or under shingles to create a watertight seal.
- Ice and Water Shield: In colder climates, a special self-adhering waterproof membrane is often used along eaves, valleys, and around penetrations for extra protection against ice dams and wind-driven rain.
Common Issues Affecting Roof Decking Integrity
Even the best-built roofs can run into problems over time, and the decking is no exception. It’s the foundation for everything else, so when it gets compromised, the whole system is at risk. Ignoring these issues can lead to some pretty serious and expensive repairs down the line.
Water Intrusion and Rot
This is probably the most common culprit. Water finds its way in through damaged shingles, faulty flashing, or even just general wear and tear. Once it gets past the outer layers, it starts to soak into the decking material. Plywood and OSB are particularly vulnerable. Over time, this moisture leads to rot, making the wood soft and spongy. You might notice sagging in the roofline, or if you were to walk on it (which you shouldn’t without knowing what you’re doing!), you’d feel soft spots. In the attic, you might see dark stains or even visible mold growth.
- Signs of water damage:
- Dark or wet spots on the decking in the attic.
- Sagging or uneven roof surfaces.
- Mold or mildew smells.
- Peeling paint or bubbling on interior ceilings below the roof.
Overloading and Structural Stress
Roofs are designed to handle certain loads, like snow, ice, and wind. But sometimes, these loads can exceed what the decking and framing can safely support. Think about a heavy snowstorm on top of an already old roof, or if multiple layers of old shingles weren’t removed before a new layer was installed. This extra weight puts a lot of stress on the decking, potentially causing it to crack, delaminate, or even fail completely. It’s like trying to carry too much in one go – eventually, something gives.
Pest Infestation and Mold Growth
Beyond just water, other unwelcome guests can damage your roof decking. Termites, carpenter ants, or even rodents can chew through the wood, weakening its structure. Mold and mildew, often a byproduct of moisture, can also degrade the material over time. These issues aren’t always visible from the outside, so regular inspections, especially in the attic space, are important to catch them early before they cause significant structural harm.
The integrity of your roof decking is directly tied to the overall health and longevity of your entire roofing system. Proactive identification and addressing of issues like water damage, overloading, and biological infestations are key to preventing catastrophic failures and ensuring your home remains protected.
The Role of Roof Decking in Weather Resistance
Providing a Stable Substrate for Roof Coverings
Roof decking, typically made from plywood or OSB, forms the solid foundation upon which your shingles, tiles, or metal panels are laid. Think of it as the sturdy base that keeps everything else in place. Without this firm surface, your primary roofing materials wouldn’t have anything to grip onto properly. This stability is super important when wind tries to lift your shingles or when heavy rain needs to be channeled away effectively. It’s the first line of defense, really, making sure the rest of the system can do its job against the elements.
Preventing Wind Uplift and Material Displacement
Wind can be a real menace to roofs, especially during storms. It tries to get underneath your roofing materials and lift them off. The decking plays a key role here by providing a solid, continuous surface that fasteners can securely attach to. When the decking is properly installed and well-connected to the framing, it creates a strong bond that resists wind uplift. This means your shingles or metal panels are less likely to get torn off or shifted, which could otherwise lead to leaks and further damage. It’s all about creating a unified system that can stand up to those strong gusts.
Contributing to Overall Water Management
While the underlayment and the final roof covering are the main water barriers, the decking contributes significantly to how well your roof manages water. It provides a smooth, even surface that helps direct water flow towards the gutters and downspouts. If the decking is warped or uneven, water can pool in spots, increasing the chance of it seeping through any tiny gaps. A well-installed deck, combined with proper underlayment and flashing, creates a layered defense that keeps water out and guides it safely away from your home’s structure. It’s a team effort, and the decking is a vital player in that team.
Roof Decking’s Contribution to Energy Efficiency
When we talk about keeping a house comfortable and saving on energy bills, we often think about insulation and windows. But the roof deck, that layer of plywood or OSB sitting right on top of your rafters, plays a bigger part than you might realize. It’s not just a base for shingles; it’s part of the whole system that keeps your home’s temperature steady.
Supporting Insulation and Vapor Barriers
The roof deck provides a solid, flat surface that’s absolutely necessary for installing insulation effectively. Whether you’re using fiberglass batts, spray foam, or rigid boards, a good deck means the insulation can sit evenly without gaps. This is super important because any gaps or low spots can let conditioned air escape or outside air creep in, making your heating and cooling systems work overtime. Think of it like trying to put a blanket on a lumpy mattress – it just doesn’t work as well.
Beyond insulation, the deck also supports vapor barriers. These are critical for controlling moisture. In colder climates, a vapor barrier on the warm side of the insulation stops moist indoor air from getting into the attic and condensing on cold surfaces, which can lead to mold and rot. The roof deck is where these barriers are often attached, so its condition matters.
Minimizing Air Leakage
This is where things get interesting. A well-installed roof deck, with properly sealed seams and fastened panels, acts as a decent air barrier. This means fewer drafts sneaking into your living space from the attic. When you have gaps between the decking panels, or if the panels themselves aren’t sealed well, air can move more freely. This isn’t just about comfort; it’s about energy loss. Air leaks can account for a significant chunk of your heating and cooling costs. So, while the underlayment and shingles are the main weatherproofing layers, the deck underneath is the first line of defense against unwanted air movement from the attic into your home.
Impact on Attic Temperature Regulation
How your roof deck interacts with attic ventilation and insulation directly affects attic temperature. A well-ventilated attic stays cooler in the summer and drier in the winter. The roof deck, by providing a surface for insulation and supporting ventilation baffles (which keep insulation from blocking soffit vents), helps make this ventilation system work. If the deck is compromised by moisture or rot, it can’t do its job properly, and the whole system suffers. This can lead to hotter attics in the summer, which radiates heat down into your living space, and colder attics in the winter, potentially contributing to ice dams.
Here’s a quick look at how different factors tie together:
| Factor | Impact on Energy Efficiency |
|---|---|
| Deck Condition | Solid deck supports insulation and air sealing. Rot compromises both. |
| Insulation Support | Even insulation means less heat transfer. |
| Air Sealing | Reduces drafts and energy loss from the attic. |
| Ventilation Support | Helps maintain optimal attic temperatures and moisture levels. |
Basically, a sound roof deck is a quiet but important player in keeping your home energy efficient. It’s part of that hidden structure that makes everything else work better.
Maintenance and Inspection of Roof Decking
Taking care of your roof decking is pretty important, even though you don’t see it every day. It’s the part that sits right under your shingles or whatever else makes up your roof’s outer layer. If it starts to go bad, the whole roof system can have problems. Think of it like the foundation of a house – if that cracks, the rest of the house is in trouble. So, keeping an eye on it is a smart move.
Identifying Signs of Decking Damage
Sometimes, the first signs of decking trouble aren’t obvious. You might not see a leak right away. But if you notice soft spots when you walk on the roof (if you ever do, be careful!), or if you see sagging in the roofline from the ground, that’s a red flag. Inside, look for water stains on your ceiling or in the attic, or even a musty smell. These can all point to moisture getting to the decking, which can lead to rot.
- Visible sagging or dips in the roofline.
- Soft or spongy areas when walking on the roof (use extreme caution).
- Water stains, mold, or dampness in the attic space.
- Daylight visible through the roof deck in the attic.
Preventive Measures for Longevity
Preventing problems is way better than fixing them later. One of the biggest enemies of roof decking is water. So, making sure your gutters and downspouts are clear is a big deal. They need to actually move water away from the house. Also, keeping tree branches trimmed back from the roof helps a lot. Falling branches can cause damage, and leaves and debris can trap moisture, which is bad news for the decking underneath.
- Regularly clean gutters and downspouts. Ensure they are securely attached and sloped correctly to drain water away from the foundation.
- Trim overhanging tree branches. This reduces the risk of falling debris and limits shade that can keep the roof damp.
- Address minor roof issues promptly. Don’t wait for small problems like a few missing shingles to turn into major leaks that compromise the decking.
The Importance of Professional Assessments
While you can do some basic checks yourself, a professional roofer has the experience and tools to really know what they’re looking at. They can spot issues you might miss, especially things hidden under the roofing materials. Getting a professional inspection every few years, or after a major storm, can save you a lot of headaches and money down the road. They can tell you if the decking is still solid or if it’s starting to show signs of wear that need attention before it becomes a serious structural problem.
Regular professional inspections are key to catching subtle issues before they escalate. A trained eye can identify potential problems with the roof decking that might not be apparent during a casual visual check, helping to maintain the structural integrity and longevity of your entire roofing system.
Roof Decking in the Context of Building Codes
Meeting Structural Requirements
Building codes are basically the rulebook for construction, and they have a lot to say about how roofs are put together. When it comes to roof decking, these codes are really focused on making sure it can handle whatever the weather throws at it and the weight it’s supposed to carry. Think about snow loads in winter or strong winds. The codes specify things like the minimum thickness of the plywood or OSB you can use, and how far apart the supporting rafters or trusses can be. This isn’t just about making things sturdy; it’s about preventing collapses and ensuring the whole roof system works as one piece. They’re designed to keep people safe, plain and simple.
Material Specifications and Standards
Beyond just thickness and spacing, building codes also point to specific standards that roofing materials, including decking, need to meet. You’ll often see references to organizations like ASTM (American Society for Testing and Materials). For example, there are ASTM standards for plywood and OSB that detail their strength, durability, and how they should perform under stress. These standards act like quality checks. If a material meets these specs, it’s generally considered suitable for use in construction according to the code. It helps ensure that the materials used aren’t just random pieces of wood, but ones that have been tested and proven to perform.
Ensuring Compliance for Safety and Performance
Getting a building permit and passing inspections means you’re showing that your roof decking installation follows all the rules. This process is key to making sure the roof is not only safe but also performs well over time. Codes often dictate how the decking should be fastened – like the type and spacing of nails or screws. This detail matters a lot for how well the decking transfers loads to the framing and resists things like wind uplift. Inspectors check these things to confirm everything is up to par. It’s all part of a system to make sure that when your house is built, it’s built right, and that includes the roof over your head.
Building codes provide a baseline for safety and performance. While they set minimum requirements, many builders and homeowners opt for higher-quality materials or installation methods to exceed these standards, especially in areas prone to extreme weather. This proactive approach can lead to a more durable and resilient roof system over the long term.
Here’s a quick look at what codes typically address for roof decking:
- Material Type: Plywood or OSB are common, but codes specify grades and standards.
- Thickness: Minimum thickness requirements based on span ratings.
- Span Ratings: How far apart the supporting joists or rafters can be for a given decking thickness.
- Fastening: Type, size, and spacing of nails or screws.
- Edge Support: Requirements for supporting the edges of the decking panels.
- Expansion Gaps: Sometimes required to allow for material movement.
Wrapping It Up
So, we’ve talked a lot about how the roof deck is kind of the unsung hero of your roof system. It’s not just a flat surface; it’s the backbone that holds everything else up and makes sure all the weight, like snow or wind, gets spread out properly to the rest of the house. Without a good deck, even the fanciest shingles or metal panels won’t do their job right, and you could end up with bigger problems down the line. It really shows how all the different parts of a roof work together, and that the deck is a pretty important piece of that puzzle.
Frequently Asked Questions
What exactly is roof decking, and why is it important?
Roof decking is like the solid floor for your roof. It’s usually made of big sheets of wood, like plywood or OSB (which is like wood chips glued together). It sits on top of the roof’s wooden beams (rafters or trusses) and provides a strong, flat surface. This surface is super important because it holds up everything else on your roof, like the shingles or metal panels, and helps spread out all the weight and forces, like snow or wind, down to the rest of the house.
How does roof decking help support the weight on the roof?
Think of the decking as a team player. When snow piles up or the wind blows hard, it pushes down or pulls up on the roof covering. The decking grabs that force and spreads it out evenly across many of the wooden beams underneath. This prevents any single beam from getting too much weight and breaking. It’s all about sharing the load!
What’s the difference between plywood and OSB for roof decking?
Both plywood and OSB are common choices. Plywood is made of thin layers of wood glued together, kind of like a stack of wood veneers. OSB is made from wood strands or chips mixed with glue and pressed together. OSB is often a bit cheaper and can be stronger in some ways, but plywood might be a little more resistant to swelling if it gets wet. Both do a good job holding things up when installed correctly.
Can roof decking get damaged easily?
Yes, it can! The biggest enemy of roof decking is water. If a roof leaks, water can soak into the wood, causing it to rot, get soft, or even fall apart. Pests like termites or mold can also damage it. Plus, if too much weight is put on the roof, like during a heavy snowstorm or if old roofing layers aren’t removed, the decking can get stressed and damaged.
Does the thickness of the roof decking matter?
Absolutely! Thicker decking is stronger. Manufacturers give decking ‘span ratings’ which tell you how far apart the supporting beams can be for a certain thickness of decking to still hold up safely. Using decking that’s too thin for the distance between the beams is a common mistake that can lead to a weak roof.
How is roof decking attached to the house’s frame?
The decking sheets are usually nailed or screwed down to the rafters or trusses, which are the main wooden supports of the roof. It’s really important to use the right kind and number of nails or screws, and to space them correctly. This connection is what allows the decking to transfer all those roof loads down to the house’s structure.
What role does roof decking play in keeping water out?
While the main roof covering (like shingles) is the first line of defense against rain, the decking provides a solid base for it. It ensures there are no gaps or weak spots for water to easily sneak through. It also works with the underlayment (a protective layer installed over the decking) to create a strong barrier against moisture, especially in places like valleys or around chimneys.
How do I know if my roof decking needs to be checked or replaced?
Look for signs like soft or spongy spots when you walk on the roof (be very careful!), or if you can see daylight coming through the roof in your attic. Sagging areas in the roofline are also a bad sign. Sometimes, you might notice mold or a musty smell in the attic, which can mean moisture is getting to the decking. If you see any of these, it’s a good idea to have a professional roofer check it out.
