New Roof: Tear Off Or Layover Shingles?

When looking to purchase a new roof for their home, many homeowners debate laying new shingles over the existing shingles or just start fresh by tearing off the old shingles.  Usually homeowners think about laying over to save some money – but is it worth the saved bucks?

Most cases – no. Its worth tearing off your shingles for the following reasons:

Inspect Condition of Roof Decking 

Without tearing the shingles off and actually seeing the roof deck, one can only speculate the condition of the OSB. Obviously, if sections of your roof are rather soft to walk on the wood is bad and will need replaced. However, you can have smaller sections of wood rot and not know it until the shingles are torn off.

Roof Warranty

Many shingle manufacturers have rather poor warranties for roofs that have been laid over. Best case scenario you will get a 10 year limited life warranty – it will be pro-rated. If the shingle fails within the first year after your roof lay over, you will have to pay some money out of pocket. The best thing about a Carlson Exteriors roof replacement is the roof warranty. Any roof we replace will get a 50 year, non prorated warranty that is transferrable one time. It actually increases with inflation so you don’t have to pay anything out of pocket! Woohoo!

Overall Roof Appearance

If your old shingles have warping or curled up edges, the new shingles that you lay over will take on the look of the old shingles. The new shingles may look wrinkly or bumpy. The new roof will look terrible from day one.

curled shingles

Shortened Roof Life

If a new roof is laid over, it will have a shorter roof life. The shorter lifespan is due to a couple reasons. First, not nailing directly into the roof decking can lower your roof’s resistance to high winds. The nails might not be driven as deeply or as securely into the plywood as they should be. On the other hand, some nails may be overdriven thanks to the old shingles “cushion” . When nails are overdriven, it can pierce directly through the new shingle and not provide any security at all. Some home insurances provide better rates if your shingles are nailed directly into the OSB. Secondly, the moisture trapped between the two layers of shingles will increase the speed of asphalt deterioration. The second layer of shingles will increase heat and moisture retention, especially if your roof is not ventilated properly.

Too Much Weight

If you already have two layers of shingles on your home, city code prohibits another layover. This is because of the unnecessary weight each layer of shingles add to your home. If you are outside of city limits and are not required to obey city codes, be mindful of how much weight and stress you add to your home’s structure

Carlson Exteriors always tears off the existing shingles for these reasons. The money that homeowners would “save” by not tearing off old shingles is not worth it. A layover roof can be deemed more expensive due to poorer roof warranty, possibility of more leaks, and the damage that could be done to home’s structure. In this case, the cons outweigh the pros.

Behind the Scenes with CertainTeed

CertainTeed shingles in Moire Black in Normal il

This blog is part of a series. Search our site for “behind the scenes” to read other articles in the series.

roof-replacement-bloomington-il-certainteed-landmark-pro-in-maxdef-pewter

CertainTeed is a nationwide known brand; and for good reason. They make great shingles and offer plenty of colors. But the reason Carlson Exteriors loves using CertainTeed is for the roofing warranty they provide to the homeowner.

This warranty is registered in homeowner’s names. The original is mailed to homeowners, a copy is mailed to Carlson Exteriors, and CertainTeed keeps a virtual copy. Unlike most warranties, CertainTeed’s has no loop holes and no fine print. To read more in detail about our Unconditional Roofs – Click here.

I was able to interview CertainTeed’s Territory Manager, Bob Eaton, to get his insider opinion.

I’ve worked for CertainTeed for 15 years now. I truly enjoy seeing my customers and I believe that will never change. I believe providing a true 50 years Peace of Mind Full replacement warranty for all homeowners is essential. I’m the point person for all claims and when a shingle does fail, I want to make sure the homeowners gets taken care of in all aspects. The only way to do that is to have the SureStart Plus Warranty on their home.

If you look at the chart below, the SureStart Plus warranty Bob is talking about, actually increases with inflation. The middle column is the usual warranty that most shingles come with. With the typical Limited Warranty, even in the first year the homeowner is still paying a decent chunk out of pocket. EVERY roof Carlson Exteriors installs, gets a SureStart Plus Warranty.

certainteeds-shingle-warranty

unconditional-roof-warranty-example-certificate
Example Warranty Certificate of what every replacement roof customer of Carlson Exteriors receives

Now back to Bob:

I can’t ever remember CertainTeed not doing the right thing for the consumer. CertainTeed has always supported me in the field and that is critical to my success and to homeowner’s happiness.

Carlson Exteriors is a great partner. I truly enjoy working with everyone. You’re extremely organized from top to bottom. From my stand point, you do it right the first time.

Click here to get a roof replacement quote

Click here to visit CertainTeed’s website

Intro to “Behind the Scenes” Blog Series

Deep granite shakes and Board and Batten siding with Natural Slate siding, white trim and black roof in Savoy IL

The brands a contractor uses should not be an arbitrary decision. Any product that’s new to the construction industry is not offered immediately by Carlson Exteriors Inc. We wait and watch for a few things:

  • Does the product do what it claims to do- without fail!
  • Are there warranty issues? If there are, how does the manufacturer handle it?
  • Does the manufacturer provide adequate training for contractors?
  • Is the product a safe bet for homeowners?

Why Am I Telling You This?

Carlson Exteriors Inc. spends a long time debating and researching a product before we ever think about adding it to our exterior services. Our siding carries purpose. Our shingles have a backbone. Our gutters will never let you down. We always insist that every product performs perfectly – zero exceptions.  It’s worth talking about – so we will! With our ‘Behind the Scenes’ blog series, we will go over products Carlson Exteriors has chosen to use and why. We will discuss our relationships with siding, roofing, gutters, and garage door companies, we’ll talk with manufacturers directly, and we’ll show you, the homeowner, how you fit into the grand equation.

 

 

If you are interested in reading these articles, search “Behind the Scenes” on our website. It will show you all the articles that have been released.

Love the Wood Look? Hate the Wood Maintenance?

DaVinci makes a polymer shake product that looks like real cedar shakes

You are not alone! Thankfully there are many home exterior products out there to satisfy your desires. Let’s celebrate those products by taking a closer look.

 

Garage Doors

If refinishing your garage door every couple of years has kept you from purchasing a wooden garage door, CHI Accents line has come to your rescue. While these overhead garage doors look like real wood (even close up) they are metal doors made to look like wood. No maintenance at all! They over many styles and five different wood colors.

Click here to build your faux wood garage door online

Click here to look at CHI Accent Product Guide

Wooden Shakes or Wooden Shaker Style Siding

Most people know that vinyl shakes come in a variety of colors but few seem to realize that vinyl can mimic natural wood if the homeowner so desires. Vinyl Manufacturers have started to variate colors on a single shake panel to really recreate cedar siding.

Cedar Siding

There are a few hard board sidings out there that do a fantastic job of looking like real wood siding. Some require more maintenance than others. These hard board sidings are LP Smartside, James Hardie Fiber Cement Siding, and Royal Celect Siding. Check out our earlier blog series on Comparing Hard Board Siding by click here to learn about them.

If hard board siding breaks the budget, consider a variegated vinyl siding panel. Mastic Quest siding has six colors that resemble cedar. The Gualazzi’s thought it was a good choice for them after deciding their current cedar siding was not working for them. Check out that amazing decision by clicking here.

Wood Shake Roof

There are a couple of companies out there that make a wood shake roofing product that’s made of a polymer blend. Two top these companies are DaVinci Roofscapes and Inspire Roofing Products. While these products will be close to the same price point as real wooden shakes, there is absolutely no maintenance with a polymer blend shake. These shakes may look slick but are easy to walk on (so you can hang Christmas lights!). They are considered “self-healing” shakes, which means if they get scuffed or scratched the sun will heat up the polymer and erase the scratch.

 

Want to talk more about one of these? Interested in a wood-look product not mentioned? Give Carlson Exteriors a shout.

Genflex Rubber Roof Training Day

Carlson Exteriors Inc. Roofing Crew had an in house training day with Genflex. They learned how to install rubber roofing materials around bump outs, corners, properly overlapping seams, knowing how to patch holes the right way, and the correct way to apply adhesive.

Click here to visit Genflex’s website

Understanding Roof Underlayment

When replacing your roof, it’s very easy to get caught up in shingle color and brand. Before you rush into that, make sure your contractor is not skimping on the underlayment. Not all underlayment is created equal. Not all contractors install underlayment in the same locations.

Carlson Exteriors uses Winterguard, CertainTeed’s brand of ice and water barrier. Per city code this barrier is placed at all valleys and at the eaves.  However, there are locations this barrier should be applied that are not required by city code. These locations are all roof penetrations (such as vents or furnace flues), around chimneys, skylights, and anywhere a roof line meets a siding wall. These joining areas are first susceptible to leaks if your home is not sealed correctly by using a ice and water barrier. Many manufacturers require these additional areas to have an ice and water barrier applied to qualify for the roof or shingle warranty.

An Ice and Water Barrier (like Winterguard) should be applied around pipes, around chimneys, skylights, and anywhere a roof meets a siding wall
An Ice and Water Barrier (like Winterguard) should be applied around pipes, around chimneys, skylights, and anywhere a roof meets a siding wall

 

Make sure your contractor is not using a 15lb or 30lb felt. This used to be contractor’s only option but the roofing industry has evolved into synthetic felts. The old felt would tear easily and gave no traction to installers. If your home has the old felt under your shingles, if any shingles would blow off your flimsy felt would be left exposed. If exposed for too long, it will rip leaving your OSB to fend for itself. Synthetic felt eliminates this problem. Synthetic felt is extremely durable and resistant to ripping or tearing. Installers also prefer it when installing because it’s easier to work on.

When you meet with a contractor, remember more than the shingles are working to protect your home from roof leaks or ice dams. The whole roofing system, combined together, protects your home.

Clay Tile Roof Repairs

broken roof clay tiles

Are you one of the lucky people that live in a home with a clay tile roof? Who do you turn to when you need a repair or even a simple inspection? Not a lot of contractors in the Bloomington/Normal area work on clay tile roofs anymore.

Carlson Exteriors is one of the only contractors in the area that will repair and inspect clay tile roofs!

tall tan brick building with red clay tiles
Clay tile roof repair in Bloomington IL performed after a storm.

The Preferred Shingle for Home Insurance

CertainTeed+NorthGate+-+Anchorage+Shingle+Roofing+Contractor

We are proud to introduce the Northgate Shingle by CertainTeed. It’s the shingle your insurance company wants you to have! So…. why is this shingle one of the best on the market? The biggest reason is the Northgate shingle has a Class 4 Impact/Hail rating. This is the highest rating possible! Most insurance companies offer a discount when you tell them you had these put on your roof.

Other reasons to make the Northgate your favorite shingle are:

  • Better gradual retention. This is critical to protect the asphalt against UV breakdown. Once your granules fall off, your shingle will fail.
  • Higher tear strength compared to standard shingles. This means the shingles can stand up against very strong winds
  • Has stronger nail pull through resistance- AKA if your installer has the pressure too high on the nail gun, the nail head could go all the way through your shingle.
  • This shingle has been modified to resist cracking and shrinking in both hot and cold temperatures. Your roofers can install in zero degree weather without having shingle shrinkage issues.
  • The Northgate shingle still qualifies for the 50 year non-prorated Unconditional Roof warranty Carlson Exteriors offers for free.

 

Click here to see CertainTeed’s brochure on Northgates.

Early Signs of Roof Failure

roof with loose shingles

As the snow and ice melt off your roof, it’s a good time to see if your roof sustained any stress or damage from the winter.

  1. Brown Spotting or Tea Staining on your ceiling. This is the easiest way for you to catch a small leak early. The spot might not drip or be wet to the touch but it’s a sign of a leak and will be worth having check out. If you know the leak has been fixed and want to get rid of the stain, use a stain-blocking primer like Kilz or Bullseye first then use your regular ceiling paint. Without the stain blocker primer the brown spot will come through the ceiling paint, even if the leak has been fixed.

    brown spot on ceiling tea stain on ceiling
    A tea stain or brown spotting on ceiling is an indicator of roof leak
  2. Missing Shingles. If you can see your roof in it’s entirety you will still know if you are missing shingles by finding pieces in your yard. Shingles lose adhesive strength as it ages. Drastic temperature changes are hard on the shingle bonding strip. After this is weakened, wind easily blows off your shingles leaving you exposed.

    roof with loose shingles
    Over time weaker shingle lose adhesive bond strength and may blow off easier
  3. Curled or Cracked shingles. Over time asphalt shingles dry out and become brittle and fragile. Frail shingles are no defense against environmental dangers (like hail) and need attention sooner rather than later. It’s easier to see curled shingles from the ground – the edges are often described as looking like a potato chip. Cracked shingles may only be visible while standing on the roof.

     

  4. Cracked or Damaged Pipe Flashing. Pipe flashing wear out quicker than the rest of your roof. It’s an easy fix in terms of roof repairs but may be harder for the average homeowner to see. The only way to inspect pipe flashing conditions is from being on the roof. Often it’s just best to call a local contractor that you trust to come over and inspect!

    cracked pipe boot flashing
    Cracked pipe boot flashing causes leaks

You might want to check out our short video by Project Manager Nick Coyle on why your 30-year shingle won’t last 30 years.