How commercial roofing quotes work, and how this site helps
A commercial roofing quote is the end of a process that starts on the roof: someone inspects the deck, the insulation and the gutters, decides on a system, and prices a scope. This page walks through that process from the buyer's side, so you know what each quote should be based on, and explains what this site does with an enquiry.
1. Write one brief for every roofer
Quotes are only comparable if every firm prices the same problem. Write a short brief: the building and its use, the roof area and type, what the roof is doing now (leaking, ponding, corroding, end of life), any plans such as rooftop solar or a lease event, and the access constraints. Send the same brief to each firm.
2. Expect an inspection before a firm price
A reliable quote for a commercial roof normally follows an inspection: a look at the covering, core samples or opening-up to check whether the insulation is wet, checks of the gutters, outlets and cut edges, and on older buildings an asbestos refurbishment survey before anything intrusive. A price given from photographs alone is a budget figure, and you should treat it as one.
3. Ask for options, not just a number
On many roofs there is more than one honest answer: repair the failed area, refurbish with an overlay, over-sheet or coating, or replace. Ask each firm to price the options it thinks are viable, with the expected service life and the guarantee for each. Our repair, refurbish or replace guide explains how to choose between them.
4. Compare on six scope lines
Line the quotes up on the system, the falls, the insulation build-up and U-value, the guarantee, the access and edge protection, and the exclusions. Then compare prices. The quote sense-check does the arithmetic and lists the lines each quote still has to state.
5. Check the firm, then the paperwork
Check each firm on the registers of the schemes it claims, as set out on our accreditations page, and confirm insurance, the CDM roles and who handles building control. A firm registered with CompetentRoofer can self-certify qualifying re-roofing work.
6. During and after the work
Work over an occupied building is usually phased, with edge protection and fragile-roof measures in place under the Work at Height Regulations 2005. At completion, ask for the guarantee, the specification and as-built details, the building control or self-certification certificate, and the maintenance schedule.
What happens when you send our form
Commercial Roofing Quotes is an independent publisher run by SEO Dons Ltd. When you send the form, your answers come to us. We read them and we reply by email, usually with a view on how your quotes compare and which questions to put to each roofer. We do not survey, price or install roofs, and we do not pass your details to a roofing contractor.
Sources: HSE roof-work and asbestos guidance, Work at Height Regulations 2005, CDM Regulations 2015, CompetentRoofer scheme. Last checked 25 October 2026.