What goes into a complete roof and how much does the price cover?
Costs and paperwork
A complete roof price covers the load-bearing structure, the layers beneath the covering, the covering itself and the details that keep water out. It also depends on access, delivery and the work included in the roofer’s quote. On a drawing, follow the slope from the eaves to the ridge and mark every valley, chimney and roof window. Each may need its own flashing, fixings or seals. This guide uses dated catalogue examples to show where the price per square metre fits into the budget and what to check before comparing two quotations.
What lies beneath the visible roof covering?
On a house with a pitched roof, the roof frame usually carries the supporting surface for the covering. Depending on the design, this may consist of battens and counterbattens or another specified arrangement. The underlay intercepts water that finds its way beneath the outer covering.
Choose the layers to suit the use of the building. A heated loft needs thermal insulation and an airtight layer on the room side. An open shelter has different requirements. Even if both roofs have the same surface area, their material schedules will differ.
How do you choose the metal sheet?
For simple slopes, consider tile-effect steel sheets cut to length. Smaller modules can be easier to handle where the roof changes direction frequently. T18 and T35 give a simple, ribbed appearance. Check each proposed profile against the roof pitch, support spacing and permissible loads for the exact product.
Look for steel thickness, coating and effective cover dimensions in the quote. Check which face has the decorative finish and what the profile is designed for. Roofing and wall sheets can look similar while having different side laps. A small price difference matters little if the lap is unsuitable for the roof.
Why do flashings matter so much?
Water needs a clear route past edges, chimneys and intersections. Eaves and ridge flashings, valleys and wall abutments must fit the roof geometry and work with the layers below. Give laps the correct orientation and form the required upstands before applying any specified sealant.
Flashings may be priced per linear metre or per finished piece. Check their width, thickness and finish. Narrowing a flashing to cut costs may leave too little coverage. Specify tapes, seals and fixings too. An unsuitable screw can become the weak point even in otherwise good roofing sheet.
What do drainage and maintenance access involve?
Gutters collect the runoff and downpipes carry it to the intended discharge point. Their cross-sections and the number of outlets depend on the area drained and the roof layout. Fascia width alone says little about capacity. Allow access for cleaning and clearing blockages.
Provide safe access to roof-mounted items that need servicing. Fit steps and walkways using the designated fixing arrangement. A metal platform can carry maintenance traffic only when its supports and fasteners transfer the loads to the appropriate part of the structure.
Which prices can help you estimate the budget?
A catalogue effective from 28 October 2026 lists cut-to-length tile-effect sheets with a 25 µm polyester coating at about €11.22 per m² of effective cover. The modular version with the same finish comes to €12.50. Both are material-only catalogue examples including 23% Polish VAT, converted into euros at the rate used on 12 November 2026. Installation and the other roof components are extra.
In the same list, switching to polyurethane brings the respective material prices to €16.98 and €18.22 including VAT per m² of cover. Cutting waste adds to the quantity purchased. Compare the actual sheet schedule and all accessories for the roof, including the offcuts allowed for in the layout.
What is often missing from the first quote?
Transporting long components, unloading and scaffolding can affect the final total. For a renovation, include stripping the roof and handling waste. The exposed substrate may need repairs. Agree how these will be documented and priced before the crew removes the old covering.
Check the labour allowance. One installer may price laying the sheets while another includes the complete build-up. Ask for itemised work and the name of the party supplying each accessory. This makes it easier to spot charges that one side assumed were already in the price.
How can you tell whether everything is included?
Follow the roof drawing from eaves to ridge. At each detail identify the support, the drainage path and the ventilation route. Then check the chimney, roof windows and service penetrations. Use these details to draw up the order so that each component has a defined purpose.
The documentation belongs with the roof too. Keep product data sheets, installation instructions and photographs taken as the work progresses. Agree on handover and subsequent inspections. The budget should allow for the roof to keep working through rain, frost and strong winds over many seasons.
Free quote
What to include in your enquiry
Tell us how you plan to use the material, the dimensions and the quantity you need. Include the thickness, grade or variant name, along with the delivery town or your preferred collection branch. For a specific product, add its name or a link to the product page. We will reply to the email address you provide to discuss availability and the terms of your order.
Read next
A concealed gutter can give a metal roof a straight eaves line if the detail leaves room for the gutter, the downpipe,…
Plan roof access around the maintenance task, the equipment involved and how often people need to reach it. An occasional gutter inspection…
A concealed gutter keeps the drainage out of sight along the eaves. Before choosing one, look at the cross-section: where will rainwater…
To select gutters for a metal roof, mark the area draining to each outlet on a roof plan. A valley may concentrate…
Square gutters emphasise the straight edge of a metal roof. Their outline tells you little about how much rainwater they can carry.…
