Roofing & cladding
Sandwich panel PIR/PUR/rockwool, trapezoidal and corrugated sheet, composite deck, tile profile, standing seam.
Sandwich panelPIR, PUR, rockwool and EPS roof and wall panels, 40–200 mm, EN 14509.Manufactured in Dilovası
Roof sandwich panel5-rib (trapezoidal) roof panels with PIR / PUR / rockwool core, 40–150 mm, overlap joint, slopes from 5 %.From stock
Wall sandwich panelFlat, micro-ribbed or lined wall panels with PIR / PUR / rockwool core 40–150 mm, tongue-and-groove joint, visible or hidden fix.From stock
PIR sandwich panelPolyisocyanurate-core roof and wall panels — λ 0.022 W/mK, B-s1,d0, 40–200 mm — the best insulation per millimetre.From stock
PUR sandwich panelPolyurethane-core roof and wall panels — λ 0.024 W/mK, 40–120 mm — the economy foam core for sheds, camps and unheated buildings.From stock
EPS sandwich panelExpanded-polystyrene-core roof and wall panels 50–200 mm — the lowest-cost insulated panel for partitions, camps and mild climates.From stock
Rockwool sandwich panelNon-combustible mineral-wool-core roof and wall panels — A2-s1,d0, EI 30–120 fire walls, 50–200 mm, acoustic Rw 30–34 dB.From stock
Cold room panelPIR cold-store and freezer panels 80–200 mm with flat food-grade skins, cam-lock or tongue-and-groove joints, for 0 °C to −40 °C.From stock
Trapezoidal & corrugated sheet27/150, 38/151, 45/333 profiles in galvanized, PPGI and aluzinc.Manufactured in Dilovası
Corrugated roofing sheet 18/76Classic sinusoidal corrugated (sinus) galvanized and coloured roofing sheet, 18 mm × 76 mm wave, 0.40–0.70 mm.From stock
Trapezoidal sheet 27/150Light 27 mm trapezoidal profile (T27) for walls, roofs on close purlins and liner sheet — galvanized or coloured, 0.40–0.60 mm.From stock
Trapezoidal sheet 38/151The standard 38 mm roof profile (T38) for industrial roofs at 2–3 m purlin spacing — galvanized or coloured, 0.40–0.70 mm.From stock
Trapezoidal sheet 45/333Deep 45 mm three-rib profile for 3–4 m purlin spacing, long-span roofs and light decking — 0.50–1.0 mm.From stock
Galvanized trapezoidal sheetPlain hot-dip galvanized (GI) trapezoidal roofing and cladding sheet in 27/150, 38/151 and 45/333, Z100–Z275, 0.40–0.70 mm.From stock
PPGI trapezoidal sheetColour-coated (pre-painted galvanized) trapezoidal roofing and cladding in 27/150, 38/151 and 45/333 — RAL colours, PE / SMP / PVDF, 0.40–0.70 mm.From stock
Composite floor deckDeck profile for concrete slabs, 0.70–1.20 mm.Manufactured in Dilovası
Tile-profile sheetRoll-formed metal roof tile in RAL colours.Manufactured in Dilovası
Standing seam roofingSnap-lock and mechanically seamed panels.Manufactured in Dilovası
Aluminium trapezoidal sheetAluminium 27/150, 38/151, 45/333 profiles rolled from 3105 H44 coil 0.60–1.00 mm — mill, stucco or coated; coastal and chemical roofs.From stock
Aluminium corrugated sheetSinusoidal 18/76 in aluminium 0.50–1.00 mm — no rust at cut edges, curves to R 1.5 m; jacketing, coastal and rural roofs.From stock
Aluminium standing seam roofSnap-lock 25 and double-lock 65 mm (Kalzip-type) panels from 3004 / 3005 H44, pitch from 1.5°, curved and site-rolled to 30 m.From stock
Aluminium sandwich panelPIR, PUR and rockwool panels 40–200 mm with coil-coated aluminium skins — coastal, food, chemical and cold-store walls and roofs.From stockProfile depth is a structural choice, not a style one
The rib depth in a profile name is the number that decides how far the sheet can span. A 18/76 corrugated sheet is 18 mm deep and wants purlins around 1.0 m apart; a 45/333 trapezoidal is 45 mm deep and spans 2.5 m or more at the same gauge. Choosing the profile first and the purlin spacing second is the usual mistake, and it costs more in steel than the profile ever saves.
Depth also changes the covered area. A deeper rib folds more of the coil into the profile, so a 1,250 mm coil covers 1,150 mm as a shallow trapezoid and 1,000 mm as a deep one — a 13 % difference in sheets for the same roof.
Sheet or panel: where the insulation goes
A profiled sheet is a skin. A sandwich panel is a finished element: two coated skins bonded to a rigid core, installed in one pass, with the insulation, the vapour control and the weather layer already in place.
Sheet is cheaper per square metre and right where insulation is separate, where the building is unheated, or where the roof is being re-covered over existing structure. Panel wins on labour, on air-tightness and on any heated or cooled building, and it is the only sensible answer for cold rooms. The core decides the panel: PIR for fire performance and thermal efficiency, EPS for budget, rock wool where a fire rating is mandated.
Ordering by area, buying by weight
Roofing is specified in square metres and bought in tonnes, and the conversion is where orders go wrong. Take the covered area, add 3–5 % for waste on a simple rectangular roof and 8–10 % where the plan is cut up, then convert with the kilograms per square metre of the finished profile — which is higher than the flat coil figure because the profile covers less area with the same steel.
Flashings, ridge caps, gutters and downpipes are ordered by running metre and are the items most often under-counted. Measure the ridge, both eaves, and every hip and valley before sending the enquiry.
Everything in roofing & cladding at a glance
| Product | Range | Standard | Availability |
|---|---|---|---|
| Sandwich panel | EN 14509 CE | EN 14509 CE | Made in our plant |
| Roof sandwich panel | 5-rib outer skin | PIR · PUR · rockwool | Made in our plant |
| Wall sandwich panel | Flat · micro-rib · lined | PIR · PUR · rockwool | Made in our plant |
| PIR sandwich panel | λ 0.022 W/mK | B-s1,d0 / B-s2,d0 | Made in our plant |
| PUR sandwich panel | λ 0.024 W/mK | 40 kg/m³ closed cell | Made in our plant |
| EPS sandwich panel | λ 0.036 W/mK | 15–20 kg/m³ | Made in our plant |
| Rockwool sandwich panel | A2-s1,d0 non-combustible | EI 30–120 walls | Made in our plant |
| Cold room panel | PIR λ 0.022 | 80–200 mm | Made in our plant |
| Trapezoidal & corrugated roofing sheet | 18/76 · 27/150 · 38/151 · 45/333 | 0.30 – 0.70 mm | Made in our plant |
| Corrugated roofing sheet 18/76 | 18 mm × 76 mm wave | Cover 1 000 mm | Made in our plant |
| Trapezoidal sheet 27/150 | 27 mm rib · 150 mm pitch | Cover 1 050 mm | Made in our plant |
| Trapezoidal sheet 38/151 | 38 mm rib · 151 mm pitch | Cover 906 mm | Made in our plant |
| Trapezoidal sheet 45/333 | 45 mm rib · 333 mm pitch | Cover 1 000 mm | Made in our plant |
| Galvanized trapezoidal sheet | Z100 · Z140 · Z275 | 27/150 · 38/151 · 45/333 | Made in our plant |
| PPGI trapezoidal sheet | 6 stock RAL colours | PE · SMP · PVDF | Made in our plant |
| Composite floor deck | 50/1000 · 60/940 · 75/750 | 0.70 – 1.20 mm · S350GD+Z275 | Made in our plant |
| Tile-profile roofing sheet | 350 mm step · 1 100 / 1 180 cover | 0.40 – 0.60 mm PPGI / PPGL | Made in our plant |
| Standing seam roofing | Snap-lock 25 · double-lock 25 / 38 mm | Pan 300 – 600 mm | Made in our plant |
| Aluminium trapezoidal sheet | EN AW-3105 / 3003 H44 | 0.60–1.00 mm | Made in our plant |
| Aluminium corrugated sheet | 18 × 76 mm sinus | Cover 1 000 mm | Made in our plant |
| Aluminium standing seam roof | EN AW-3004 / 3005 H44 | 0.70–1.20 mm | Made in our plant |
| Aluminium sandwich panel | EN 14509 · CE | EN 14509 · CE | Made in our plant |
Ranges are the stocked or rolled envelope, not a tolerance. The product page carries the full size table, weights and the governing standard in full.
Frequently asked questions
What thickness of roofing sheet should I use?
0.40 to 0.50 mm covers housing and light industrial roofs at purlin spacings of 1.0 to 1.5 m. Go to 0.60 or 0.70 mm for wider spacing, snow load, or where maintenance traffic will walk on the roof.
What is covering width?
The width a sheet actually covers once the side lap is taken, which is always less than the coil width it was rolled from. A 1,250 mm coil typically gives 1,000 to 1,150 mm of cover depending on the profile depth.
Sandwich panel or sheet plus insulation?
Panel for any heated or cooled building: it installs in one pass, seals better and carries its insulation and vapour control already bonded. Separate sheet and insulation is cheaper in material and makes sense on unheated structures or a re-cover over existing purlins.
Which sandwich panel core should I choose?
PIR for the best combination of thermal performance and fire behaviour, EPS where budget leads and the fire requirement is modest, rock wool where a formal fire rating is mandated. At the same thickness rock wool is roughly twice the weight of PIR.
How many sheets will a roof need?
Divide the roof area by covering width times sheet length and round up, then add 3–5 % for waste. A 240 m² plane in 6 m sheets covering 1,000 mm needs 40 sheets before waste.