Door and frame perimeters
Entry doors, side doors, patio sliders and garage man-doors. High-movement joints that get used daily and take weather from every direction.
10 yr
Written workmanship warranty
Service · GTA & Niagara
Every seam, sealed.
Exterior Caulking & Sealant Work — Beyond the Windows.
Windows are where most homes leak first, not where they leak only. Door frames, trim, corner boards, siding transitions, masonry control joints and every penetration through the wall were sealed once, by whoever built the house, and on an older home not one of them has been touched since.
- Correct grade per substrate
- Failed material removed
- 10-yr written workmanship warranty
300+
Properties sealed & under warranty
DOWSIL
Pro-grade silicone — no big-box caulk
A+
BBB Accredited business
Where it goes
The joints nobody inspects.
A reseal quote that only counts windows is counting about two-thirds of the openings in your wall. These are the rest — and on a pre-1980 house they are the same age as the ones you already know have failed.
Masonry control and expansion joints
The deliberate gaps built into brick and block so the wall can move. When the sealant in them dies, they stop being control joints and start being channels.
Siding and cladding transitions
Where siding meets brick, stucco meets trim, or two materials with different expansion rates meet each other and neither one gives.
Wall penetrations
Hose bibs, dryer and bathroom vents, electrical and light boxes, cable and AC line entries, gas meters. Every one is a hole through the envelope.
Trim, corner boards and fascia joints
The long vertical and horizontal seams that run the height and width of the elevation and open up as the timber behind them moves.
Sills, thresholds and capping seams
Where water is already being directed and only the joint is stopping it going the wrong way.
Not one tube for everything
The right sealant for the joint in front of us.
Most of a Royal job runs on professional-grade DOWSIL silicone, because most exterior joints move and sit in the sun. But substrate and joint behaviour decide the product, not habit.
Moving joints in the weather — window and door perimeters, control joints, material transitions — get silicone. They open and close through the freeze–thaw year and need a sealant that stretches rather than one that hardens and splits.
Joints that must be painted and barely move are the exception, and they get a paintable product chosen for that condition. What we will not do is downgrade a high-movement joint to a paintable caulk because it makes the paint stage easier — that trade is exactly how exterior work fails early.
Deep joints get backer rod first. A bead bonded on three sides has nowhere to stretch and tears itself apart. Rod sets the depth so the sealant works as intended.
What is in the scope
- Every accessible exterior joint assessed and listed — not just the ones you pointed at
- Failed material cut out and removed in full before anything new goes in
- Substrate cleaned back to something a sealant can actually bond to
- Backer rod set wherever joint depth calls for it
- Colour-matched bead, gunned and hand-tooled
- Written scope so you know exactly which joints were done
Why Ontario eats sealant
Forty freeze–thaw cycles a winter.
A GTA winter does not hold one temperature. It crosses zero repeatedly — often several times in a week — and every crossing makes the materials in your wall expand and contract against each other at different rates. The joint between them opens and closes each time. That is what a sealant is for, and it is also what wears one out.
Add wind-driven rain off the lake, freeze–thaw working liquid water into any gap that will take it, and summer UV baking the south and west elevations, and the service life of a builder-grade acrylic bead in this climate is short. Not defective — just finished.
Which is why the honest question on a pre-1980 house is not whether the exterior sealant has failed. It is which elevations went first.
What open joints actually cost you
- Heat walking out through the wall all winter, and cooled air all summer
- Water into the wall assembly, where it rots sheathing and framing you cannot see
- Freeze–thaw spalling in masonry once water sits in the joint and freezes
- An easy entry route for insects and rodents
- Paint and trim failing early because the substrate behind them never dries out
Straight answers
Exterior caulking questions.
How is this different from the window resealing service?
Same craft, different joints. Window resealing is the perimeter of every window and door opening, priced per opening. Exterior caulking is everything else in the wall — transitions, control joints, penetrations, trim seams. Most homes do both in one visit because the ladders are already up.
Can you just do the one gap I found?
Yes — every job carries a minimum charge ($250 before HST, a little higher for several small items) and books with a $250 deposit plus HST. A handful of openings costs a little more per opening, so most people add the rest while we are there: If one joint has failed on a house of a certain age, its neighbours are the same age and the same weather — doing one is a callback waiting to happen.
Do you seal around brick and stone?
Yes. Masonry control joints, material transitions and penetrations through masonry are standard work, and silicone bonds well to brick, block, stone and concrete. What we do not do is seal a wall shut that is designed to drain — weep holes stay open.
Will you seal my weep holes?
No, and be wary of anyone who offers. The small open joints along the bottom course of a brick wall are there to let the cavity drain and breathe. Sealing them traps water inside the wall, which is the opposite of the job.
What about interior caulking — bathrooms and tile?
Our published work is exterior. Ask us about interior sanitary sealant work and we will tell you honestly whether it is something we are taking on.
Do you remove the old caulking or go over it?
Remove it. Wherever the existing material has failed it comes out in full before anything new goes in. New sealant bonded to dead sealant inherits the failure underneath it.
Instant estimate
Count your openings. See your price.
Every window and every exterior door is one opening, priced by its size. Count them yourself for an instant number, add any extras, and book with a $250 deposit (plus HST) — or send us photos of the house and we'll count them and reply with a firm quote.
While we are there
Replace exhaust vent coversCracked or missing exterior vent covers swapped for new ones while we are there — $60 each
Sealant colour requiredFrom the DOWSIL colour chart. White is included — any other colour is one charge for the whole job
- Stand back far enough to get a whole wall in each shot.
- We count the openings ourselves and reply with a firm number — usually within one business day.
- Your photos stay with your quote request and are never published. Privacy.
Openings0
Subtotal$0
Tax (13% HST)$0
Your estimate$0
Prices may change on sight of the job; if we change the price, your deposit is fully refundable. See the terms. Lift or scaffold work is quoted separately. A $250 deposit (plus HST, $282.50) books your date and comes off the invoice.
View cart & book- Written 10-year workmanship warranty
- Deposit fully refundable if we change the price
No payment at this step — you check everything in the cart before you book. Rather talk it through? Call (647) 524-6180
Where we work
Serving the GTA and Niagara.
We specialize in large and heritage homes where the original seals have failed. Proudly serving:
EtobicokeTorontoNorth YorkEast YorkMississaugaOakvilleVaughan / WoodbridgeMarkhamRichmond HillAncasterNiagara-on-the-LakeSt. Catharines
Including The Kingsway, Rosedale, Forest Hill, Lawrence Park, Lorne Park, Mineola, Hoggs Hollow, the Bridle Path, Kleinburg, Old Ancaster, Dundas and the Niagara wine country. Not on the list? Call — routing decides more than distance, and we cluster work by neighbourhood.
Ready when you are
Seal the whole envelope, not the one gap.
One visit finds every failed joint on the elevation and prices putting them all right.