Roofing Cost Estimating Services
Roofing estimating services that measure, price, and document every item in your roofing package. NRM2 methodology. 95% accuracy rate. Delivered in 10 to 48 hours across the UK.
What Roofing Estimating Actually Covers
There's a lot that goes into a roofing estimate. More than most people expect.
Roof area is the obvious starting point, but it's measured as slope area, not plan area. That distinction matters considerably. A pitched roof at 45 degrees has roughly 40% more surface than its plan footprint suggests, and pricing from the plan view is a quick way to underbid. Our estimators work from roof plans and sections, taking off slope areas directly.
Beyond area, there's boundary work. Ridges, hips, valleys, verges, abutments and the like are all measured separately in linear metres, because each carries its own material and labour rate. Then flashings, insulation, fixings and accessories, scaffolding or access plant, and wastage allowances applied per item. Nothing buried in a global percentage.
Measurement follows UK construction standards and guidelines. Specifically NRM2 Work Section 17 for sheet roof coverings, Section 18 for tile and slate roof and wall coverings, and Section 19 for waterproofing systems. Each item in the Bill of Quantities carries a description, unit, quantity, rate, and total. Nothing hidden in a lump sum.
All estimates follow NRM2 measurement methodology. Pitched tile and slate roofing is measured under Work Section 18. Sheet roof coverings including EPDM and GRP are measured under Work Section 17. Waterproofing systems fall under Work Section 19.
list_alt What Every Estimate Includes
Itemised Material Quantities
Roof area in m2, linear metres of each boundary type, enumerated accessories and fixings. Every item listed separately.
Wastage Allowances Per Item
Stated clearly on each line. Not buried in a global rate or hidden in the total.
Labour Schedule
Hours and rates by trade, consistent with current regional UK rates for the project location.
NRM2-Structured Bill of Quantities
Tender-ready. The document goes straight to your client or procurement team without further work on your end.
Roof Systems and Project Types We Estimate
We cover the full range. Pitched, flat, green, repairs, replacements, commercial, industrial. All of it.
Pitched Roofing
Clay plain tiles, interlocking concrete tiles, natural slate, Spanish slate, fibre-cement slate, metal tile systems. Slope area measured to NRM2 Section 18. Ridges, hips, valleys, and verges as separate line items every time.
Flat Roofing
EPDM single-ply membrane, GRP fibreglass, built-up felt, torch-on systems. Measured to NRM2 Sections 17 and 19. Upstands and flashings are separate items, not folded into the area rate.
Green Roofs
Extensive sedum mat systems and intensive planted roofs. Drainage board, filter fleece, and growing medium each measured and priced separately. Structural load flagged in preliminary notes.
Roof Repairs and Reroofing
Stripped and relaid areas measured separately from patched repairs. Partial reroofing scoped accurately to avoid cross-contamination with existing work. Both repair and partial reroof scopes are priced using the same NRM2 methodology as new installations.
Full Roof Replacement
Complete scopes from strip-out through to new covering. Every element priced as a distinct package, from the decking and insulation through to the finished covering and all associated flashings and accessories.
Commercial and Industrial
Standing seam metal, large-span profiled sheet, single-ply flat roofs for warehouses and industrial units. The scope is bigger, but the methodology is the same. Part of our broader commercial estimating services across the UK.
Pitched and Flat Roof Estimating in Detail
Pitched roofing is probably our most common enquiry. Each system, whether clay, slate, or metal tile, carries different material rates, different wastage factors, different accessory requirements. We know them well. The underlying roof structure, cut rafters or trussed rafters, is a separate scope covered under our carpentry cost estimating service.
Flat roofing is a different discipline entirely. EPDM, GRP, and built-up felt each have their own measurement rules and cost drivers. The area rate alone won't cover a flat roof with multiple upstands, outlets, and edge details. We take it all off properly. Where flat roofs tie into drainage runs, those below-ground drainage elements are covered separately under our groundwork estimating service.
Green roofs, roof repairs, and full replacements sit alongside these as regular parts of our workload. Commercial and industrial roofing packages are just as common as residential. Whatever the scope, the measurement discipline stays consistent.
list_alt Who Sends Us Work
Roofing Contractors and Subcontractors
Pricing a tender with a tight deadline. Too complex to estimate quickly in-house. We get it.
Main Contractors
Independent check on a roofing subcontract package before accepting a tender.
Developers and Architects
Cost planning across multi-plot schemes or roofing cost data to support fee proposals and planning applications. Early-stage budgets are handled through our preliminary estimating service.
Self-Builders and Homeowners
Someone who's received a roofing quote and wants to know whether the number makes sense before signing anything. See our residential estimating services for the full project scope.
15 Years of UK Roofing Estimates
Independent. Confidential. Conflict-free. Clients across England, Scotland, Wales, and Northern Ireland report up to a 20% improvement in tender win rate after working with an independent estimating firm.
Independent Estimating
No commercial relationship with roofing contractors or material suppliers. The numbers come from measurement, not from a supplier's price list.
Strictly Confidential
Project drawings, specifications, and all information provided to Blaze Estimating stay confidential. Details are never shared with third parties.
UK-Wide Coverage
Regional labour rates applied to every estimate based on project location. London, South East, Midlands, North, Scotland, Wales, Northern Ireland.
10 to 48 Hour Delivery
Most roofing estimates are ready within 10 to 48 hours of receiving drawings. Rush service available for tight tender deadlines.
Bluebeam, PlanSwift, CostX, Cubit
Digital takeoff from slope geometry. Roof areas measured correctly from the drawings, not approximated from plan view.
9+ Estimators
A dedicated team with 15+ years of UK construction estimating experience across residential, commercial, and industrial roofing projects.
How to Get Your Roofing Estimate
Send us your drawings. We'll have a no-obligation quote back to you within 10 to 15 minutes, and the full estimate ready in 10 to 48 hours.
Send Your Drawings
Roof plan, sections, elevations, and specification if you have one. PDF or CAD format is fine. The more detail, the more accurate the output.
Quote in 10 to 15 Minutes
We review scope and come back with a no-obligation quote during business hours (9:00 AM to 9:00 PM). No waiting around.
Estimate in 10 to 48 Hours
Digital takeoff, NRM2-structured Bill of Quantities, ready for tender submission. Rush service available if your deadline is tight. See our full construction takeoff services for more detail.
Roofing Estimating FAQ
Answers to the questions we hear most often from roofing contractors, developers, and project managers across the UK.
Roofing estimating is the professional process of measuring, pricing, and documenting all materials, labour, plant, and ancillary costs for a roofing package, following UK construction standards and guidelines to produce a tender-ready cost document for contractors and developers.
Blaze Estimating produces roofing estimates for pitched roofs (tile, slate, metal), flat roofs (EPDM, GRP, built-up felt), green roofs, roof repairs, and complete roof replacements across residential, commercial, and industrial projects throughout the UK.
Most roofing estimates are delivered within 10 to 48 hours of receiving drawings and project information. Rush service is available for tight tender deadlines. A no-obligation quote is provided within 10 to 15 minutes of enquiry during business hours.
Blaze Estimating applies NRM2 measurement methodology throughout. Pitched tile and slate roofing is measured under Work Section 18. Sheet roof coverings including EPDM and GRP are measured under Work Section 17. Waterproofing systems are measured under Work Section 19.
Architectural drawings including the roof plan, floor plans, sections, and elevations are required. A roofing specification or schedule of works is helpful where available. PDF or CAD format is accepted. The more detail provided, the more accurate the estimate output.
Where drawings confirm that scaffolding or access equipment is required for the roofing works, a provisional allowance is included in the estimate. The allowance is clearly labelled as provisional and flagged for the client to confirm with a specialist access contractor.
Yes. All project drawings, specifications, and information provided to Blaze Estimating are treated as strictly confidential. Details are not shared with roofing contractors, material suppliers, or any third party. Blaze operates as an independent estimating firm with no commercial relationships with suppliers.
Yes. Blaze Estimating produces roofing cost estimates for commercial buildings including offices, retail units, industrial warehouses, and multi-storey developments. Estimates cover flat roof systems, metal sheeting, standing seam, and single-ply membranes used on large commercial and industrial roofing packages.
Request a Roofing Cost Estimate Today
15+ years. 6,000+ projects. 95% accuracy rate. Send us your drawings and we'll have a quote back to you within 10 to 15 minutes. The estimate follows in 10 to 48 hours, or faster if you need it.
95%
Accuracy Rate
6,000+
Projects
15+
Years
10 min
Quote Response