What's Under Your Roof Matters

When you’re getting estimates for a new roof, most of the conversation naturally revolves around the things you can see, including the shingles, color, style and, of course, the final price.

There is another part of your roof that deserves just as much attention, even though you will probably never see it once the job is finished: the plywood underneath.

The plywood, also called roof decking or sheathing, is essentially the foundation of your roofing system. The underlayment and shingles are installed over it, so the decking needs to be solid, dry and structurally sound enough to properly support the new roof. The tricky part is that we often do not know exactly what condition that plywood is in until the old roof comes off.

A roof can look relatively normal from the outside while hiding deteriorated plywood underneath. Years of small leaks, condensation, poor ventilation, or moisture intrusion can leave sections of the decking soft, rotten, moldy or otherwise compromised. Once the old shingles and underlayment are removed, the roofing crew finally gets a good look at what has been happening underneath.

Does that mean every roof replacement needs all-new plywood? Not necessarily. If the existing decking is dry, solid, properly installed, and in good condition, there may be no reason to replace it. However, if portions have deteriorated, replacing those sections is an important part of doing the roof correctly.

This is also one of the areas where homeowners can get caught off guard by cost. Plywood is expensive, and depending on how much needs to be replaced, it can add a noticeable amount to the final bill. When you are already making a major investment in a new roof, it is understandable to wonder whether the old plywood can simply stay in place.

Putting brand-new roofing materials over deteriorated decking is a little like installing beautiful new hardwood floors over a damaged subfloor. You may save money that day, but you have not solved the underlying problem.

Weak or damaged decking may not hold roofing fasteners as securely as sound material. It can also contribute to uneven or sagging areas and leave the roofing system more vulnerable to problems in the future. Most importantly, you are installing a product designed to last for decades over a foundation that may already be deteriorating.

There is also the issue of the manufacturer’s warranty. Roofing manufacturers generally require shingles to be installed according to their specifications and over an appropriate, sound roof deck. Installing shingles over compromised or improperly prepared decking can potentially affect warranty coverage. The exact requirements vary by manufacturer and product, which is another reason the condition of the decking should be addressed during installation rather than ignored.

I always encourage homeowners to look beyond the big number at the bottom of a roofing estimate and review what is actually included. Ask your contractor what the estimate says about plywood or roof decking, whether any replacement is included and what the additional cost will be if deteriorated sections are discovered after the old roof is removed.

This is especially important when comparing estimates from different contractors. One contractor may appear considerably less expensive than another, but the two estimates may not include the same scope of work. If one accounts for replacing damaged decking and another barely mentions it, the lower price may not tell the whole story.

Nobody likes unexpected costs during a home improvement project, and contractors do not particularly enjoy delivering that news either. However, when we uncover rotten or deteriorated plywood, replacing what needs to be replaced is usually money better spent than covering up the problem and hoping for the best.

A new roof is a significant investment in your home, and ideally, you should be able to install it and not worry about it again for a very long time. When the old shingles come off, homeowners should understand what is underneath, review the condition of the decking with their contractor and know how any necessary replacement will affect the project.

Saving money is always worthwhile, but cutting a corner that could compromise the life of your new roof rarely is.

Bob O’Donnell is the owner of O’Donnell Bros. Inc., a Bristol-based home improvement company established in 1975. Have a question? Email info@odonnellbros.com with the subject line “Ask the Pro.” For your remodeling needs, call O’Donnell Bros. Inc. at (860) 589-5155 or visit www.odonnellbros.com. Advice is for general guidance only.

When you’re getting estimates for a new roof, most of the conversation naturally revolves around the things you can see, including the shingles, color, style and, of course, the final price.

There is another part of your roof that deserves just as much attention, even though you will probably never see it once the job is finished: the plywood underneath.

The plywood, also called roof decking or sheathing, is essentially the foundation of your roofing system. The underlayment and shingles are installed over it, so the decking needs to be solid, dry and structurally sound enough to properly support the new roof. The tricky part is that we often do not know exactly what condition that plywood is in until the old roof comes off.

A roof can look relatively normal from the outside while hiding deteriorated plywood underneath. Years of small leaks, condensation, poor ventilation, or moisture intrusion can leave sections of the decking soft, rotten, moldy or otherwise compromised. Once the old shingles and underlayment are removed, the roofing crew finally gets a good look at what has been happening underneath.

Does that mean every roof replacement needs all-new plywood? Not necessarily. If the existing decking is dry, solid, properly installed, and in good condition, there may be no reason to replace it. However, if portions have deteriorated, replacing those sections is an important part of doing the roof correctly.

This is also one of the areas where homeowners can get caught off guard by cost. Plywood is expensive, and depending on how much needs to be replaced, it can add a noticeable amount to the final bill. When you are already making a major investment in a new roof, it is understandable to wonder whether the old plywood can simply stay in place.

Putting brand-new roofing materials over deteriorated decking is a little like installing beautiful new hardwood floors over a damaged subfloor. You may save money that day, but you have not solved the underlying problem.

Weak or damaged decking may not hold roofing fasteners as securely as sound material. It can also contribute to uneven or sagging areas and leave the roofing system more vulnerable to problems in the future. Most importantly, you are installing a product designed to last for decades over a foundation that may already be deteriorating.

There is also the issue of the manufacturer’s warranty. Roofing manufacturers generally require shingles to be installed according to their specifications and over an appropriate, sound roof deck. Installing shingles over compromised or improperly prepared decking can potentially affect warranty coverage. The exact requirements vary by manufacturer and product, which is another reason the condition of the decking should be addressed during installation rather than ignored.

I always encourage homeowners to look beyond the big number at the bottom of a roofing estimate and review what is actually included. Ask your contractor what the estimate says about plywood or roof decking, whether any replacement is included and what the additional cost will be if deteriorated sections are discovered after the old roof is removed.

This is especially important when comparing estimates from different contractors. One contractor may appear considerably less expensive than another, but the two estimates may not include the same scope of work. If one accounts for replacing damaged decking and another barely mentions it, the lower price may not tell the whole story.

Nobody likes unexpected costs during a home improvement project, and contractors do not particularly enjoy delivering that news either. However, when we uncover rotten or deteriorated plywood, replacing what needs to be replaced is usually money better spent than covering up the problem and hoping for the best.

A new roof is a significant investment in your home, and ideally, you should be able to install it and not worry about it again for a very long time. When the old shingles come off, homeowners should understand what is underneath, review the condition of the decking with their contractor and know how any necessary replacement will affect the project.

Saving money is always worthwhile, but cutting a corner that could compromise the life of your new roof rarely is.

Bob O’Donnell is the owner of O’Donnell Bros. Inc., a Bristol-based home improvement company established in 1975. Have a question? Email info@odonnellbros.com with the subject line “Ask the Pro.” For your remodeling needs, call O’Donnell Bros. Inc. at (860) 589-5155 or visit www.odonnellbros.com. Advice is for general guidance only.

Six Tips for Finding a Good Contractor

Every week I get calls from homeowners who have been left unsatisfied after a contractor failed to show up, left a job undone, or didn’t properly communicate costs. The process of finding a good remodeler and getting the result you want can be daunting, especially with so many options. So where do you start? As we kick off home remodeling season, here are six essential tips to help you find a trustworthy professional for your renovation plans.

1. Ask for Referrals from People You Trust

When it comes to hiring someone to work on your home, treat it like finding a great doctor or accountant. Ask friends, family, neighbors, and coworkers who they’ve used and loved. You can also check with your local building inspector or the owner of your nearby hardware or lumber store—they’ll know who consistently does quality work. And don’t forget local Facebook groups—they’re often gold mines of honest recommendations.

2. Follow Your Gut Instinct

Meeting a contractor is a lot like a first date. Do they show up on time? Do they listen to your needs and explain things clearly? Are they trying to educate you—or just sell you? A contractor who treats you like a partner (not a pitch) is someone you can build with—literally. Flashy talk and deep discounts mean nothing if your gut says no. Listen to that voice in your head. It’s usually right.

3. Ditch the “Ballpark Figure” Request

Asking for a rough estimate might sound like a smart way to get started, but it’s not going to help you in the long run. Costs vary wildly based on site conditions, material choices, and the specifics of your vision. Save time and confusion by coming prepared with a clear list of what you want. That way, contractors can give you an accurate estimate—and you can compare apples to apples.

4. Ask for a Step-by-Step Plan

You deserve to know how the job is going to unfold—from demolition to final cleanup. A good contractor will walk you through the process, provide a clear timeline, and explain what to expect at every stage. This isn’t just about convenience; it’s about building confidence and avoiding surprises. The more you understand the process, the smoother it will go.

5. Verify Licenses, Insurance, and Credentials

A professional contractor should be licensed, insured, and willing to show you proof of both. Don’t take their word for it—ask to see copies and check expiration dates. You can also verify licenses through your state’s licensing board. Bonus points if they belong to a local or national trade association—that often means they’re committed to continuing education and ethical business practices.

6. Get Everything in Writing—No Exceptions

A handshake isn’t enough. Insist on a detailed written contract that spells out the scope of work, payment schedule, timeline, and materials to be used. This document protects both of you if questions come up later. If a contractor is hesitant to put it in writing, that’s your cue to walk away. A pro knows the power of paperwork.

Bob O’Donnell is the owner of O’Donnell Bros, Inc., a Bristol-based home improvement company established in 1975. Email your questions for Bob to info@odonnellbros.com with the subject line “Ask the Pro.” All questions may be considered for publication. To contact Bob for your remodeling needs, call (860) 589-5155 or visit www.odonnellbros.com. Advice is for guidance only.

Think Twice Before Tackling These Outdoor Projects in Winter

Many homeowners think about tackling big projects in the winter before the weather warms up and contractors start getting too busy. But when it comes to major exterior work like roofing and siding, winter isn’t your best bet. Here’s why holding off might save you headaches—and money—in the long run:

1. Cold Weather and Building Materials Don’t Mix
Temperatures below 40°F can significantly impact the performance of materials like shingles and vinyl siding. Shingles become brittle, increasing the risk of cracks and splits during installation, while vinyl siding shrinks in the cold, which can lead to misalignment or leaks when it later expands in warmer weather.

2. Shingle Adherence Needs Heat
Shingle sealant relies on warmth and sunlight to activate properly. In cold conditions, the seal might not set as securely, leading to potential issues down the line. Contractors often need to hand-seal shingles in these conditions, which adds time and expense to an otherwise straightforward process.

3. Air Tools Aren’t Winter-Friendly
Most contractors rely on air nail guns for outdoor work, but these tools can malfunction in cold weather. Moisture in the airline can freeze, causing nails to be driven in too shallow or too deep, compromising the integrity of the installation. Compressors face similar challenges in freezing temperatures.

4. Safety Risks on Icy Surfaces
Winter conditions make outdoor work hazardous. Even experienced contractors face risks from black ice on roofs or ladders, increasing the chance of accidents. While professionals take every precaution, working in icy conditions is inherently more dangerous.

5. Unpredictable Winter Weather
Snow and freezing rain can wreak havoc on a job site. Unlike rain, which can be managed with tarps, snow adds both moisture and weight, making it difficult to protect an open roof. Imagine starting a roofing project only to have a snowstorm dump a foot of snow on the site—it’s a risk no one wants to take.

6. Warranty Concerns
Many manufacturers require products to be installed in temperatures above 40°F for warranties to remain valid. A cold-weather installation could void your warranty, leaving you unprotected if issues arise later.

7. Winter Work Takes Longer
Cold weather slows everything down. Workers need to take frequent breaks to stay warm, and shorter daylight hours limit productivity. A job that might take a day in spring could stretch to several days in winter.

When Winter Work Can’t Wait
In some cases, waiting until spring isn’t an option. If delaying repairs could lead to further damage, make sure you hire an experienced contractor who is well-versed in working under winter conditions. Discuss the precautions they’ll take to ensure a safe and effective installation. Cutting corners to accommodate the weather isn’t worth the risk.

Is It Really Worth It?
While winter projects may seem like a good idea, the risks often outweigh the benefits. Waiting for warmer weather ensures a safer, smoother, and more cost-effective process.

Bob O'Donnell is the owner of O'Donnell Bros, Inc., a Bristol-based home improvement company established in 1975. Email your questions for Bob to info@odonnellbros.com with the subject line “Ask the Pro”. All questions may be considered for publication. To contact Bob for your remodeling needs, call O'Donnell Bros, Inc. at (860) 589-5155 or visit www.odonnellbros.com. Advice is for guidance only.