Derrie Mk II
Traditional double Roman tile available in 9 colours. Can be used in conjunction with Scott capped verge to give a maintenance free verge system, and also with the Scott Roo Verge, Roo-Ridge and Hip Systems.
Technical Data
Designation: EN490- IL - 32 - RF 300X405 - 5.15
- Maximum Pitch: 54º without special fixing (see under fixing)
- Minimum Pitch: 22.5º 17.5º *
- Minimum Head lap: 75mm 100mm
- Maximum Gauge: 344mm 319mm
Size of Tile (overall): 419mm x 334mm
Hanging Length: 405mm
Nominal Cover Width: 300mm
Tile Weight: 5.15kg
Profile Depth: 32mm
Nail Hole Diameter: 5-8mm
Nail Hole Position: 33 + or -5mm from the top of the tile
Weight of Tiling (Approx.)
Headlap: 75mm 100mm
Weight/m²: 50kg 54kg
Net Covering Capacity
Headlap: 75mm 100mm
Tiles/m²: 9.7 10.4
Net Batten Length
Headlap: 75mm 100mm
Length/m²: 2.9m 3.1m
Recommended Batten Size
Minimum 38mm x 25mm for rafters not exceeding 600mm span. Battens to be secured with round wire or cut wire nails conforming to BS 5534.
Eave: Standard tile with eave filler unit
(A) Capped Verge: Right and left hand Derrie Mark II Capped Verge
(B) Bedded Verge: Right hand - Standard Tile
Left hand - Left hand Verge Tile
Undercloak: 150mm wide fibre reinforced cement strip.
Fixing (minimum):
All perimeter tiles to be mechanically fixed in accordance with BS 5534.
17.5° - 29° Perimeter tiles to be nailed or clipped.
30° - 44° Each tile in alternate courses to be nailed or clipped in a chequer board pattern.
45° - 54° Each tile to be nailed or clipped.
55° and over: Each tile to be nailed and clipped.
Nails to be 75mm x 2.65mm Aluminium. Reference AA.
Clips to be Scott Derrie MK II Standard Tile Clip. Reference AS.
Verge: Derrie MK II Verge Clip Reference AS.
Eave: Derrie MK II Eave Clip Reference AS.
It is recommended that windloading calculations be carried out for all pitches, and ground conditions to ascertain if more onerous fixings are required.
Valley: Open metal valley
Abutment: Cover flashing, Secret gutter
Ridge Wet Fix: Half round, butt jointed, 455mm long
Ridge Dry Fix: Scott Roovent Dry Ridge System
Hip: Third round butt jointed 455mm long
Mono Ridge: Universal type, butt jointed 455mm long
The colours and textures displayed on this website are as accurate as can be reproduced. We recommend referring to samples (available on request)
