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Straight Arrow Roofing & Siding 647-686-7663 Free estimate

Roof replacement, done in a day where the house allows

A roof replacement from Straight Arrow Roofing & Siding takes the old shingles off down to the wooden deck, fixes any soft or rotten decking, and puts on a complete new roof: drip edge, ice and water protection at the eaves, underlayment, shingles, vents and ridge cap. We replace roofs across Brantford, Hamilton, Burlington, Oakville, Milton, Cambridge and Paris, with no upfront deposit, and many houses are finished in a single day.

Updated by Straight Arrow Roofing & Siding

Drone view of a two-storey brick house partway through a re-roof, new grey shingles on most of the roof

What goes into a new shingle roof?

A roof is a system of layers, and the shingles you can see from the street are only the last one. Each layer below does a job the shingles cannot do alone. This is what a full replacement puts back, from the wood up.

Cross-section of a shingle roof at the eave, showing the layers from the deck up Shingles Underlayment Ice and water protection Drip edge Roof deck Rafter
A shingle roof at the eave, in section. Not to scale.
The layers of a shingle roof, from the deck up
LayerWhat it does
Roof deckThe plywood or board sheathing everything is nailed to. Soft or rotten sections are cut out and replaced before anything goes on.
Drip edgeMetal along the eaves and rakes that steers water off the edge and into the eavestrough instead of behind the fascia.
Ice and water protectionA self-sealing membrane at the eaves, in valleys and around chimneys and skylights, where ice dams and wind-driven rain push water uphill.
UnderlaymentA second line of defence over the rest of the deck if a shingle lifts or blows off.
ShinglesThe weather surface. Starter strips along the edges lock the first course down against wind.
FlashingMetal where the roof meets a wall, a chimney or a skylight. Most leaks start here, not in the open field of shingles.
Vents and ridge capLet warm, damp attic air out at the top so it does not rot the deck from below or feed ice dams in winter.
Ridge cap shingles going on over a blue ice and water membrane, with a roofing nailer
Ridge cap going on over the ice and water membrane at the peak.

How long does a roof replacement take?

On a typical house the whole job, from tear-off to cleanup, can be done in as little as one day. Bigger or steeper roofs, a second layer of old shingles to remove, or a lot of rotten decking add time, and so does weather: we do not open a roof with rain coming. You will know the plan before the crew arrives.

Two roofers on a steep roof laying new shingles over fresh plywood and underlayment
The crew laying new shingles over fresh decking and underlayment after the tear-off.

What changes the price of a new roof?

We do not publish a flat price, because two houses on the same street can need very different roofs. These are the things that move the number, and every one of them is written into your estimate:

Do you need a permit to replace your roof?

Usually not, if the new shingles are the same kind as the old ones. Brantford, Hamilton, Burlington, Oakville and Cambridge all say in writing that re-shingling an existing roof needs no building permit.[1][2][3][4][5] Changing to a different material, repairing the structure, or changing the slope can need one, and Milton and the County of Brant publish no exemption at all. Our roof permit guide has the exact wording from each city.

What should a roofing contract say?

The Province of Ontario's own advice is to get quotes from at least three contractors, to "limit the down payment to 10% and never pay the full amount of the contract until the work is done", and to remember that a contract signed at your home comes with "a cooling-off period of 10 calendar days".[6] We require no upfront deposit at all. Our guide to hiring a roofer in Ontario lists what the Province says every contract should include.

A roofer fitting a vent through new plywood decking after the tear-off
Fitting a vent through new plywood decking.

Where do we do roof replacement?

Across our whole area: Brantford, Paris and the County of Brant, Hamilton, Ancaster, Dundas and Waterdown, Burlington, Oakville, Milton, Cambridge.

Sources

  1. Do I need a permit?, City of Brantford, Building Division, read 16 October 2026.
  2. Building permit for residential renovations, City of Hamilton, read 16 October 2026.
  3. Do I need a building permit?, City of Burlington, read 16 October 2026.
  4. Building permit application process, Town of Oakville, read 16 October 2026.
  5. Building permits, City of Cambridge, read 16 October 2026.
  6. Hiring a roofer, Government of Ontario, updated 25 September 2024, read 16 October 2026.

Want a straight answer about your roof?

Call or send the form, and we will set a time to look at it. No upfront deposit is required.

Call 647-686-7663 Ask for an estimate