How to compare wall and roof panel prices in 2026?

For example, in one PIR family, a 100 mm wall panel has Uc 0.22 W/(m²·K), while a 100 mm roof panel has 0.21. These figures relate to specific variants. They are not a conversion factor for the whole market. To compare costs, you need a panel that meets the requirements of the relevant building element.

Enter the application, core, thickness, both facings and the type of coatings. Then add the cover width module, lengths and number of pieces. Separately note the grade and any deviations. This makes it clear whether the price difference does not result from omitting an important feature.

For fire requirements, record the relevant classification of the system, not just a statement about the core. For thermal performance, use the appropriate coefficient for the complete panel. A quote for a cheaper variant that does not meet the design is not a real alternative. The technical scope must be compared first.

Also note the measurement conditions and any preparation of the ends. If one offer includes a ready-made roof undercut and the other only a straight cut, the scope of work on site will differ. This difference is worth pricing separately.

Check whether the price refers to effective m², total m² or per piece. Confirm net or gross and the discount conditions. The price list may include separate surcharges for length, coating or small quantities. The document date does not have to mean that all rates are valid indefinitely.

A current quote for the specific batch is needed before the order is approved. Pay attention to its validity period and minimum logistics. Do not compare a special price for a large delivery with a rate for a few short elements without taking these conditions into account.

Let us assume the purchase of 92 m² of wall panels and 68 m² of roof panels. For the exercise alone, let us take the rates €35.87 and €40.50 net per m². We obtain €3300.04 for the walls and €2754.00 for the roof, that is €6054.04 net. These are illustrative figures, not a current offer.

If this material produces 86 m² of walls and 64 m² of roof, the useful area will be 150 m². The cost of the panels alone is then €40.36 net per square metre of enclosure. Such a result is not the cost per square metre of floor area of the building. It must be clearly stated by which area we divide the total.

Calculate the flashings by edge length, taking overlaps into account. The fixing and sealing set provided for the given system. For the roof, details for the eaves, ridge, penetrations and drainage are added. For the walls, corners, plinth and openings matter.

Then add transport, unloading and installation equipment. The structure and labour should have their own line items. Do not combine them into an unexplained percentage surcharge if you want to compare offers reliably. A scope broken down into elements is easier to check later at acceptance.

A large gate reduces the area of full panels but creates a perimeter of flashings and requires framing. Several small windows may mean more work than one large glazed area of the same total area. For this reason, simply subtracting the openings from the wall does not give the full price.

Also check the strips above the openings. Their length, direction and support may limit the use of offcuts. In a small hall, it is worth drawing all elevations. Savings from a better layout may be possible without changing the core or lowering the coating parameters.

When both variants cover the same function and the same quantity of finished enclosure. Check whether each includes full delivery and the same scope of extras. Determine which costs remain with the investor. This applies in particular to unloading and preparatory works.

Finally, confirm the lengths, colour and date. Keep the schedule together with the material description. It allows a change in price to be distinguished from a change in scope when the offer is refreshed. A well-calculated budget can then be updated without guessing all the quantities again.