Marley Modern tiles per m², gauge and battens (chart for 10 to 150 m²)
Marley Modern covers 9.9 tiles per m² at a 345 mm gauge (Marley, Modern interlocking concrete roof tile, technical specification, read 2026-09-20), and 10.7 at 100 mm headlap. One batten every 345 mm up the slope is 2.9 m of batten per m². The calculator's starting roof, a 12 m by 9 m gable at 26.6° (120.7 m² of roof), takes 1,315 Marley Modern tiles with 10% waste, 385 m of batten and 27 ridge tiles.
How many Marley Modern tiles per m²?
9.9 tiles per m² at a 345 mm gauge (Marley, Modern interlocking concrete roof tile, technical specification, read 2026-09-20). The data sheet also gives 10.7 at 100 mm headlap (Marley, Modern interlocking concrete roof tile, technical specification, read 2026-09-20), the larger headlap used on lower pitches; the gauge closes up with it, so read the gauge for your pitch from the data sheet. Tiles to order = m² of roof x tiles per m² x (1 + 10% waste), rounded up. Waste: Rule of thumb, not a tile manufacturer figure, read 2026-09-20; hips and valleys cut more.
Marley Modern gauge and battens
Maximum batten gauge 345 mm (Marley, Modern interlocking concrete roof tile, technical specification, read 2026-09-20). One batten per gauge up the slope gives 1000 / 345 = 2.9 m of batten per m². Marley gives the batten size (38 x 25 mm up to 450 mm rafter centres, 50 x 25 mm up to 600 mm); the fixing schedule (which tiles are nailed or clipped) comes from the fixing specification for your site.
Marley Modern tiles and battens for 10 to 150 m²
Computed with the tile calculator's own code at 9.9 per m² and the 345 mm gauge. The m² is the roof surface; the roof area in m² guide turns a plan size and pitch into it.
| Roof area | Tiles, no waste | Tiles, 10% waste | Battens (m) | Tiles at 10.7/m² | Tile cost |
|---|---|---|---|---|---|
| 10 m² | 99 | 109 | 32 | 118 | £169 |
| 25 m² | 248 | 273 | 80 | 295 | £423 |
| 50 m² | 495 | 545 | 160 | 589 | £845 |
| 75 m² | 743 | 817 | 240 | 883 | £1,266 |
| 100 m² | 990 | 1,089 | 319 | 1,177 | £1,688 |
| 150 m² | 1,485 | 1,634 | 479 | 1,766 | £2,533 |
A 12 x 9 m roof in Marley Modern at 25° to 45°
The same plan gets more roof surface as the pitch rises, so more tiles at the same coverage. Check the minimum pitch on the data sheet before you choose the tile for a shallow roof.
| Pitch | Roof area (m²) | Tiles per m² | Tiles | Battens (m) | Ridge tiles |
|---|---|---|---|---|---|
| 25° | 119.2 | 9.9 at 345 mm | 1,298 | 380 | 27 |
| 30° | 124.7 | 9.9 at 345 mm | 1,359 | 398 | 27 |
| 35° | 131.8 | 9.9 at 345 mm | 1,436 | 421 | 27 |
| 40° | 141 | 9.9 at 345 mm | 1,536 | 450 | 27 |
| 45° | 152.7 | 9.9 at 345 mm | 1,664 | 487 | 27 |
Work it out for your roof
Open the roof tile calculator, pick Marley Modern (concrete interlocking) under Tile type and type each roof section: the tiles per m² and the gauge load from the data sheet and stay editable. It adds the ridge and hip tiles and, with your price per tile, the tile cost; the installed range for concrete tiles is £80 to £150 per m² (MyJobQuote, "Roof Tile Cost Guide", last updated 30 July 2026, cost per m² supplied and fitted, read 2026-09-20). The UK tiling cost guide compares it with 6 other tiles, from Marley Mendip (concrete double pantile) to Natural slate 500 x 250 mm (100 mm headlap).
Sources
- Marley Modern: tiles per m²: Marley, Modern interlocking concrete roof tile, technical specification: "9.9 tiles /m² at 75mm headlap" (10.7 at 100 mm headlap) — https://www.marley.co.uk/roof-tiles/concrete-roof-tiles/modern, read on 2026-09-20
- Marley Modern: batten gauge: Marley, Modern interlocking concrete roof tile, technical specification: maximum gauge "345mm"; "2.9 lin.m/m² at 75mm headlap" — https://www.marley.co.uk/roof-tiles/concrete-roof-tiles/modern, read on 2026-09-20
- Marley Modern: second coverage figure: Marley, Modern interlocking concrete roof tile, technical specification: 10.7 tiles per m² at 100 mm headlap (9.9 at 75 mm headlap) — https://www.marley.co.uk/roof-tiles/concrete-roof-tiles/modern, read on 2026-09-20
- Marley Modern: price per tile: Roofsy (merchant listing), Marley Modern interlocking tile: "£1.55" per tile (VAT treatment not stated on the listing) — https://www.roofsy.co.uk/product-page/marley-modern-interlocking-tile, read on 2026-09-20
- Ridge tile length: Marley, Ridge and Hip Tiles: ridge tiles are "provided in lengths of 450mm for clay and 457mm for concrete" — https://www.marley.co.uk/fittings/ridge-and-hip-tiles, read on 2026-09-20
- Waste on tiles: Rule of thumb, not a tile manufacturer figure: IKO's shingle recommendation "adding 10 to 15 percent of this area for material waste or loss depending on the style of roof"; cuts at hips and valleys push it up — https://www.iko.com/na/blog/blueprint-for-roofing/, read on 2026-09-20
- Installed cost per m², Concrete Tiles: MyJobQuote, "Roof Tile Cost Guide", last updated 30 July 2026, cost per m² supplied and fitted: "Concrete Tiles: £80–£150" — https://www.myjobquote.co.uk/costs/replacing-roof-tiles, read on 2026-09-20
Frequently asked questions
- How many Marley Modern tiles per m²?
- 9.9 at a 345 mm gauge, from the manufacturer data sheet (Marley, Modern interlocking concrete roof tile, technical specification, read 2026-09-20). 10.7 at 100 mm headlap. Add 10% for cuts and breakages and round up.
- What is the Marley Modern batten gauge?
- 345 mm maximum (Marley, Modern interlocking concrete roof tile, technical specification, read 2026-09-20). The gauge is the distance between battens; setting it out evenly between the eaves and the top course can make it a little less than the maximum, never more.
- How many Marley Modern tiles for 100 m² of roof?
- 990 tiles on the roof, 1,089 to order with 10% waste, and 319 m of batten. At 10.7 per m² (at 100 mm headlap) it is 1,177 tiles to order. 100 m² is the roof surface, the plan area times the pitch multiplier, not the floor of the house.
- How much batten per m² for Marley Modern?
- 1000 / 345 = 2.9 m of batten per m² of roof. Marley gives the batten size (38 x 25 mm up to 450 mm rafter centres, 50 x 25 mm up to 600 mm); the fixing schedule (which tiles are nailed or clipped) comes from the fixing specification for your site.
- How much does a Marley Modern tile cost?
- One merchant listing read for the calculator: £1.55 per tile (Roofsy, Marley Modern interlocking tile, read 2026-09-20), which is £15.35 of tiles per m² before waste. Typical UK prices: clay £0.80 to £2.50 per tile, concrete £1 to £3.50, slate £3 to £5 (MyJobQuote, "Roof Tile Cost Guide", last updated 30 July 2026, read 2026-09-20). Get your own merchant quote; prices move.
More guides
- How much does it cost to tile a roof in the UK? (per m² and per roof)
Supplied-and-fitted cost per m² for concrete, clay and slate (MyJobQuote 2026) for 50 to 150 m² of roof; tiles, battens and tile cost per type at 10% waste.
- How to calculate roof area in square metres (UK pitched and hip roofs)
Roof area = plan area x pitch factor: 1.221 at 35°, so 12 x 9 m is 131.8 m² of roof. Chart for 8 x 6 to 15 x 10 m at 25° to 45°, gable vs hip, tiles.
- Redland 49 tiles per m², gauge and battens (chart for 10 to 150 m²)
Redland 49: 17.7 tiles per m² at a 282 mm gauge (below 30°), 16.3 at 307 mm from 30°; 3.55 m of batten per m²; tiles and battens for 10 to 150 m² of roof.
- How many shingles do I need for a shed? (8x8 to 12x16 chart)
Bundles, underlayment, ridge cap, nails and drip edge for 8x8 to 12x16 ft gable sheds at 4:12 and 6:12 (Owens Corning, IKO); a 10x10 shed takes 4 bundles.
Last updated 2026-09-29. Planning quantities from manufacturer coverage figures and published cost ranges, each with its source and date: measure the roof and follow the product data sheet. Not a structural assessment.