Reading a price list for insulated wall and roof panels
Sandwich panels
The price per square metre of a sandwich panel only makes sense alongside a full specification. You need to know the panel type, core, thickness of both steel sheets, coatings and the basis of settlement. The net amount excludes tax, and the material price is not the cost of a finished building envelope. When reading a price list, check its date and scope. Then ask for a quote for your own lengths, quantities, accessories and delivery conditions. The sandwich panels heading may cover many different products. Distinguish a standard wall panel from a roof panel, a cold-storage panel and a decorative panel with a special finish. The price of one of these does not set the price level for the whole group. Pay attention to the exact description of the item, not just the section name.
Which panel does the given rate apply to?
The heading insulated panels can cover many different products. Distinguish a standard wall panel from a roof panel, a cold-storage panel and a decorative panel with a special finish. The price of one of them does not set the price level for the whole group. Pay attention to the exact description of the item, not just the section name.
Note the core type and the nominal panel thickness. For a roof panel, an additional dimension may specify the overall height including the profile rib. This is not the insulation thickness at every point. The thicknesses of both facings and their protection are also needed. Different internal coatings can change the range of application, even when the external side of two panels looks similar.
If the table does not state the required configuration, mark this gap. A missing price means neither that the product is unavailable nor that a rate from another item may be substituted.
Are you paying for the covering area?
The module width determines what strip of the building envelope the installed panel will cover. The overall width also includes the edge and interlock sections. Check which width was used to calculate the square metres. The same unit designation on two amounts is not always enough for a comparison.
The sample calculation is simple: ten panels with a 1 m module and a length of 4 m give 40 m² of nominal coverage area. Cut-outs, corners and openings can, however, change the amount of material needed for the cladding. The billed area of the ordered elements need not equal the area of the finished wall. Do not overlook rounding resulting from the full number of strips either. The final quantity should be confirmed by the length schedule.
How to compare net and gross amounts?
First bring all items onto a single basis. Net and gross prices are not interchangeable. The quote should state the tax rate applied and the order total. Check the cost of services and delivery separately. Do not judge a quote solely on the largest number printed in the header.
The date also matters. A catalogue price list is a reference point, and the price of a specific batch requires confirmation. A change in quantity, length, coating or date may affect the quotation. Keep the quotes being compared together with their specifications. Without them it is difficult to establish later whether a reduction relates to the same material. A percentage discount from different bases does not yet say which delivery will be cheaper.
Why must you also read the accessory prices?
The public price list may list accessories for the panels, even if the base panels require an individual quote. Such gaps are not filled with the price of a random panel from an adjacent table. The enclosure budget also includes flashings, seals, tapes and fixings. Their quantities result from the design and the installation instructions.
The catalogue dated 28 October 2026 listed a 30 m roll of 3 × 20 mm PES tape at €4.17 excluding VAT and €5.12 including VAT. For the 3 × 40 mm version, the listed figures were €7.17 and €8.83 respectively. These dated catalogue examples illustrate the difference between net and gross prices. Choose the width specified for the joint.
What costs may be missing from the table?
Check transport, packaging, unloading and the equipment needed on site. A vehicle with material does not always provide a crane or the ability to lift panels onto the roof. Agree access to the site, the storage location and the delivery sequence. The length of the element can affect logistics even when the price per square metre remains unchanged.
Also ask about cutting, roof valley cuts, unusual coatings and surcharges for small quantities. Labour should have a clearly defined scope. Making openings, flashings and seals takes time. If one offer includes these works and the other only the laying of panels, a simple comparison of totals will be misleading. Also allow for material that will remain unused after cutting.
How do you prepare a clear comparison of quotes?
Make a table with one row for each panel and accessory group. In the columns, put quantity, dimension, unit, price and value. Next to it, record the core, facings, coatings and required properties. Technical differences should be visible before comparing the final amount.
Attach a schedule of lengths and basic information about the building to the enquiry. Wall and roof require separate items. Ask for the elements not covered by the offer to be indicated. Finally, check the validity of the quote, the completion date and the delivery terms. A clear price list helps you keep track of costs. Only a confirmed offer for a complete set allows you to plan the purchase without guessing what lies behind the price per metre.
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