Planning & preparation
- For new build projects just follow the information contained in this leaflet to create a long lasting trouble free shingle tile strip roof covering
- For an existing roof; survey your roof structure, this will allow you to decide if it requires maintenance, upgrading or strengthening prior to fixing the shingles. Make a note of the roof construction; you require a decked roof fixed to rafters or supported on a trussed roof structure.
- You will need to measure the slope of your roof. To do this, simply measure the angle of your roof with a protractor. Then select one of the three options detailed below that best matches the slope of your roof
Do it right
Roof deckRoofing shingle tiles must be laid on a roof deck fixed in accordance with relevant British Standards & Codes of Practice
Minimum roof slope: 12.5°
Minimum deck thickness 12mm
Shingles can be laid over existing roofing felt however, the surface must be both flat and in good condition
UnderlayRoofing felt underlay must be used on roof slopes below 20° / 1 in 5 gradient
Indeed it’s good practice to always use a roofing underlay below shingles Roofing felt underlay should be laid on the roof with 15cm end laps and fixed by nailing with 10mm large headed galvanised clout nails at 10cm centres
Fix shinglesFinally fix the roofing shingle tiles in accordance with the instructions set out below
Note: Any irregularity in the surface of the decking will become visible through the shingle strips once laid
NoteIf shingles are laid on roof slopes greater than 45°, fix a second row of 5 nails per strip at the top edge of the shingle strip. This allows them to be used for vertical wall cladding applications.
- The covering of roofs can be hazardous. Always work from a secure ladder or platform and use the appropriate safety equipment.
Position and unroll the detail strip square to the line of the eaves. Fix by nailing top edge of detail strip using 10mm galvanised clout nails. Form the drip edge either dressing into gutter; or nailing to fascia at 5cm centres.
Ensure the shingles are positioned square to the line of the eaves and verge. Horizontal shingle tile alignment is created by Interlocking side slots to the edges of the shingles. Vertical shingle tile alignment is created by opening guide slots in the top of the shingle strip into which the next course is engaged.
Overlay the detail strip at the eaves with the base course of shingles nailed using 20mm galvanised clout nails, applied in line with the tile tab joint just above the bitumen adhesive strip. (5 fixings per strip)
The fixing of the eaves course of roofing tile shingles is completed by applying felt lap adhesive onto the detail strip below the tile tabs to secure them to the detail strip.
Lay the shingles diagonally across the roof taking care to keep them square to the line of the eaves and verge. Start shingle tile course with cut lengths to form a broken bond patten.
First prepare the joint by cleaning off roof debris. Lift the tile tab and heat the bitumen adhesive strip on the lower course with a high performance hot air gun.
Press the tile tab down with a batten. Check the bond after cooling and apply gun applied felt lap adhesive if so required.
Apply felt lap adhesive onto the detail strip, then overlay the roofing tile shingles cut to the verge edge. Nail the shingles centre line at verge to fully secure shingles in place.
Mark out and unroll the detail strip along the ridge line secure by nailing edge at 10cm centres using 20mm galvanised clout nails. On exposed sites apply felt lap adhesive as required.
Cut shingles with knife against a deep sided spirit level / batten to protect fingers should the blade slip. Always mark out and cut the underside of the shingle to reduce wear on the knife blade.
As an alternative to using detail strip for the ridge detail you can produce shingle ridge tiles from roofing tile shingle strips, creating an attractive tile finish to your building. See below:
Fitting shingle ridge tile to roof
The ridge tiles are positioned on the roof and nailed through the lapped section using 20mm large headed galvanised clout nails.
The bitumen strip is then heated and the joint consolidated with pressure from a batten. On exposed locations reinforce the tile lap bonding with felt lap adhesive applied in a continuous bead as required 2.5cm from edge of tile.