How to Choose an Aluminum Capping Contractor

Verify the business and the proposed crew

Confirm the contracting business name, who will perform the work and how to contact the person responsible for problems. Request the actual insurance information and clarify which work and workers it covers. A certificate is not a promise that every possible loss is covered.

Ask about WSIB coverage and clearance requirements for the arrangement. WSIB identifies an exception for some resident-hired home renovations; avoid treating one document rule as universal. Ask the contractor to explain the access and fall-protection plan for upper openings.

Ask for a demonstration of the important details

Ask to see a formed corner or sample wrap that resembles your trim. Look at the bends, returns and fit, and ask how the metal is secured. On-site brake forming is one method of producing a custom fit; the result and the specified detail matter more than a tool photograph.

Ask how the head flashing meets the wall drainage layer and how the sill sheds water. Have the installer identify the actual window weep openings. A blanket instruction to seal the top and sides but leave every bottom edge open can be wrong for a particular assembly.

Ask what happens when the trim is soft. The answer should explain assessment, disclosure and repair before covering. Confirm how moulding detail and colour will be approved.

Compare the same capping scope

Each quotation should count and locate openings, describe the covered faces and returns, specify the coil product and thickness with units, and name the colour. Include removal of old coverings, accessible wood repair, flashing work, access and disposal.

Unusual shapes and deep brickmould can require more forming work than flat trim. A low total is a reason to compare those details, not proof of dishonesty or inferior materials. Ask for an explanation of any missing item.

Use references and warranty terms carefully

References from similar profiles can show how the work fitted the building and how the contractor handled later concerns. Ask about communication, disclosed rot and follow-up on leaks. Obtain permission before visiting or contacting a past customer.

Request the manufacturer finish terms and the contractor’s workmanship terms separately. Check whether investigation, removal and reinstallation are covered, who receives a claim and whether transfer is available. No fixed warranty duration is assumed in this guide.

Questions for the final agreement

Does capping stop a window leak?

Only if the identified defect is in the work being repaired. A failed window, wall leak or missing flashing can require a different scope.

Should all trim be wrapped?

Not automatically. Condition, future window work and the value of existing profiles can support repair, repainting or replacement instead.

What should be recorded before closure?

Exposed defects, approved repairs and the agreed water-management details.

What is aluminum capping and why use it?

Aluminum capping is custom-formed metal covering suitable exterior wood trim, including window and door trim. It can reduce exposed-wood maintenance when the underlying wood and water-shedding details are sound. Covering damaged wood does not repair it.