If your roof is old or worn out, you may be considering new shingles.
But here’s something that often puzzles Calgary homeowners: Can I
put new shingles over the existing ones without ripping them off? Yes
is the answer but only if your roof is in good condition. At Straight Path
Construction, we assist homeowners in making informed roofing
choices that cost less and keep their homes secure. Let us clarify
when it works and when it doesn’t.
What Is Re-Roofing?
Re-roofing is installing a new layer of shingles on top of the existing
ones. It’s also referred to as a “roof overlay.” It seems straightforward
and may be less expensive than replacing the entire roof since you
avoid the tear-off process. It’s not, but the best option for all roofs.
Before re-roofing, we must inspect if your existing shingles and roof
deck remain intact.
When It’s Alright to Lay New Shingles Over Existing Ones
You may overlay new shingles over the existing ones if your roof already
has one layer of shingles and the surface is solid and flat. That implies
there should not be loose, broken, or curled shingles. Furthermore, the
roof structure should be able to support the weight of the extra layer.
If all seems well, re-roofing could be an option for you and cost-effective
as well.
When You Should Avoid Re-Roofing
If your roof has two or more layers of shingles on it already, re-roofing
is not worth it. It’s also risky if your old shingles are cracked, curled,
or rotting, or the roof deck is damaged. Patching over those issues
won’t solve them and it can make things worse. In Calgary’s extreme
weather, snow and rain can sneak through weak spots and produce
leaks or mold. That’s why Straight Path Construction always inspects
the roof carefully before deciding what’s best.
Pros of Re-Roofing
There are several advantages to re-roofing. It’s quicker, neater, and
cheaper since we don’t need to tear off the existing shingles. It also costs
you less in labour and dumpster rental. If your roof isn’t damaged but
simply appears old, re-roofing can be an intelligent move to give it a
new look without spending the cost of a tear-off.
Why a Full Roof Replacement Is Often Better
Although re-roofing will do, a complete replacement is more extensive
and durable. When we strip away the old shingles, we can inspect the
underlying wood and replace anything soft, rotten, or mouldy. We also
put in a new flashing and underlayment, which prevents water from
entering and increases ventilation. A complete replacement provides
you with a clean, hard beginning and usually includes a better warranty.
Things to Consider in Calgary
Calgary’s weather can be rough on roofs. Heavy snow, hail, and sudden
temperature changes mean your roof has to work hard. Two layers of
shingles can make your roof heavy and may cause more wear and tear
over time. Also, re-roofed homes may not qualify for some insurance
claims or warranties, which is something to keep in mind.
Final Thought
Yes, you can put new shingles on top of old ones, provided your roof is
sound. It may be an effective short-term measure, but not necessarily
the best long-term solution. At Straight Path Construction, we provide
free inspections and sound advice. We will tell you if re-roofing is okay
or if a complete replacement is needed.
Contact us Now
Don’t know whether your roof requires a tear-off or simply a new layer?
Contact Straight Path Construction today or stop by our website to schedule
your complimentary roof inspection in Calgary. We’ll assist you in deciding
on the most effective and safest solution for your home.
Frequently Asked Questions (FAQs)
Can I put new shingles over existing ones?
Yes, but only if your existing roof has only a single layer of shingles and the
roof is in good shape like flat, dry, and tight. It must also be
code-compliant locally.
Is re-roofing less expensive than a complete replacement?
Typically, yes. Re-roofing is cost-saving because you avoid tear-off and
disposal procedures. But it might not be as durable or warranty-eligible.
What are the dangers of putting new shingles over the old shingles?
In case your old shingles are compromised or the roof deck is weak,
putting the new shingles on top of them may cause the moisture to get
trapped and result in leaks, rot, or mold. It further puts additional
weight on your home.
How can I determine if re-roofing is the right choice?
The ideal approach is to have your roof inspected by experts. At Straight
Path Construction, we inspect your shingles, roof deck, and attic to determine
whether re-roofing is safe and efficient for your house.
