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8. ENVIROLAY INSTALLATION

8.0

ENVIROLAY INSTALLATION PROCEDURE

Please note that only Envirolay (ENVIROLAY) is 

approved for full use with the Envirotile Roof 

System in conformity to Fire Standard BS:476-3. 

If another universal type of underlay is used for 

Envirotile installation on a cold roof type it will 

contravene Deeplas’s guarantee and roof performance 

and all warranties will be considered null and void. 

Warm roof types are exempt and can, subject to 

design, use other types of underlay provided that 

the warm roof system is fully approved for full use 

in conformity with the latest revised and updated 

building regulations for 2020 onwards.

Starting at the right hand gable end roll out and fix 

to the centre of rafters a single course of Envirolay 

(ENVIROLAY) to the full roof width to be battened; 

fixing and securing the roof underlay at rafter 

centres with clout nails as you go along. A 15mm 

sag/drop is required between rafters to allow for 

interstitial condensation to run down the roof 

below fixed battens. Overlap the eaves/felt support 

trays by a minimum distance of 100mm for the 

first course of underlay (illustrated).

Cut the underlay straight at gable ends with a 

sharp knife or robust pair of scissors in line with 

the gable end edge.
Always overlap each Envirolay course by a 

recommended minimum distance of 150mm.

Use Duo Plus tape (ENVTAPE) to seal the overlap 

layers to provide added protection against high 

wind uplift loads during full exposure. 

DUO PLUS TAPE (ENVTAPE)

ENVIROLAY (ENVIROLAY)

1 1

100mm min

150mm min

Always provide a 10-15mm 

sag between rafter centres to 

allow for built up moisture 

content to run downwards

Summary of Contents for ENVIROTILE

Page 1: ...1 18 Installing Envirotiles 32 19 Single hip roof faces 33 20 Double hipped roof faces 34 21 Ventilated ridge and hip roll 35 22 Installing the ridge 36 23 Installing the hip ridge 37 24 Fitting the gutters 38 25 Envirotile slate components list 39 26 Envirotile standard components list 40 27 Envirotile standard slate components list 41 42 CONTENTS BE SAFE WHEN WORKING AT HEIGHT Ensure you conform...

Page 2: ... 50 kilos Less weight results in cheaper transportation reduced CO transport emissions and less structural requirement on roofing supports No additional roof tiles required to accommodate top and bottom eaves courses due to the innovative patented design providing customers with reduced material cost Manufactured from environmentally sustainable products otherwise destined for landfill Provides an...

Page 3: ...cking Insert A Underside Joining Clip E Drip Channel G Drainage I Slate finish aesthetics also provides non slip assistance with foothold Interlocking Open Groove C Nail Fixing Aperture D Gauge Settings B Gauge Grooves B 5mm Expansion line setting J Note Standard finish tile also available Detachable Nibs F Strengthening Rib features H ...

Page 4: ...es 50mm x 25mm for 600mm rafter centres Batten fixing nails to BS 5534 14 65mm x 3 35mm Envirotile fixing to BS EN1202 3 Every tile to be secured and fixed On normal pitch of 25 or over 30mmx 3 35mm stainless steel annular ring shank Low pitch fixing from 12 5 to 25 30mm x 4mm countersunk stainless steel screw Envirolay Bre Certified 13859 1 and BS EN 12310 1 Recommended droop allowance of 15mm be...

Page 5: ...d out below 4 C Recommended universal dry fix products to be used GRP Valley trough GRP Abutment Flashing Dedicated Envirotile dry fix verge and ridge products Must be genuine Deeplas manufactured and supplied parts Deeplas reserves the right to alter any of the elements quoted in the above specification without prior notice Please note that the above information is given in good faith and should ...

Page 6: ... to BS5534 Annex A Fully Exova Tested with Envirotile to DD CEN TS 1187 test4 Brooft4 Suitable for use on all Cold or Warm Roof type Structures 3 0 3 1 Geographical Wind Zone Underlay Name 345mm Batten Gauge Battened Lap 250mm Batten Gauge Battened Lap 345mm Batten Gauge Taped Lap Deeplas Envirolay Zones 1 to 5 2040 Zones 1 to 5 Zones 1 to 5 4500 Finished Fabric Units Value Tolerance Weight g m2 4...

Page 7: ... examples given here have been created to demonstrate how the Envirotile system is fitted Note that this guide assumes the use of product supplied by Deeplas Whilst some products can be replaced with generic branded products for the same application all product warranties are based on the installer fitting Deeplas branded products Hipped Installation For Gable and Abutment wall roofs see pages 8 t...

Page 8: ...t is critical that the roof area that is to be covered with roof tiles is level and square before installation Always provide the correct ventilation requirements at the eaves soffit area Note The roof pitch governs the recommendations of airflow per meter run required on rafter pitches above 15 degrees it will require 10 000 mm m of airflow per meter run and on pitches below 15 degrees 25 000mm o...

Page 9: ...las felt support trays Align and affix to independent rafter centres using galvanised clout nails Butt up against the abutment wall with the felt support tray Note At ends overlap each universal felt support tray by a minimum of 100mm to ensure water tightness is maintained SADDLE AND FIXING OF FELT SUPPORT TRAYS ...

Page 10: ...permanently Note Use the pronounced front edge lip located on the Eaves Starter rail and saddle the shaped contours of the felt support tray using the designated screw apertures to screw fix into the head of the fascia Please note that the Eavebar Starter Rail ENVEB is an integral part of the Envirotile Roof System and has been specifically designed to provide both the secure patented holding feat...

Page 11: ...rafters a single course of Envirolay ENVIROLAY to the full roof width to be battened fixing and securing the roof underlay at rafter centres with clout nails as you go along A 15mm sag drop is required between rafters to allow for interstitial condensation to run down the roof below fixed battens Overlap the eaves felt support trays by a minimum distance of 100mm for the first course of underlay i...

Page 12: ...ea for rising interstitial moisture and condensation to escape through the ventilated Envirotile main roof ridge system Run the Envirolay to the wall face and provide an uplift of material of at least 150mm Use Duo Plus Tape ENVTAPE to seal the overlap layers 25mm 8 ENVIROLAY INSTALLATION 8 1 ENVIROLAY RIDGE DETAIL ENVIROLAY ABUTMENT WALL DETAIL Uplift edge 150mm min ...

Page 13: ...sing the marked line PLEASE NOTE IT IS CRITICAL THAT THE FIRST BATTEN IS LEVEL Take an Envirotile and push and clip the lower joining clip E into the eaves starter rail as illustrated At the first gable end right hand rafter make a pencil mark at the top leading edge of the tile as illustrated Note that the distance between the leading edge of the tile should be located approximately centre of the...

Page 14: ...s being careful to note the minimum batten gauge required see below N B Always use a chalk line to establish the gauge for each batten course the top edge of the batten is mechanically fixed to the underside of the chalk line Fix the battens leaving out the final top course Note The installer may need to adjust the batten gauge settings to accommodate the rafter dimensions This is achieved by redu...

Page 15: ...path is clear Fix the apex batten to the rafters as shown above Then fix the top batten course 35mm down from the rafter apex 9 FITTING BATTENS 9 2 RIDGE STRUCTURE 35mm Note that the rafter straps are usually supplied flat and need to be bent to shape Before the last top eaves course batten is fixed fix a 50mm x 50mm bedded batten above the rafters using rafter straps non supplied ...

Page 16: ... saw very easily so an alternative option for the batten setting out is to set out the battens up the roof face by the recommended gauge see page 16 then fit the top batten course so that the gauge is different For the top row of tiles the installer can then cut off the TOP EDGE of the tile so that it clips into the lower tile and lines up with the top batten edge Final batten row can be reduced t...

Page 17: ...ontinuous dry fix verge when rafters are longer than 3m in length At the apex centre mitre cut and abut to the continuous dry verge unit to the correct pitch angle in readiness for the gable end cap to be fixed Note It is recommended that fascia board is used to envelope overlap the continuous dry verge at exposed gable ends This provides improved aesthetics as well as additional protection agains...

Page 18: ... ROOF TILES KEY POINTS Envirotiles are very easy to install but it will help to familiarise yourself with the important design features of the tile to ensure that you understand how the tiles fix together Envirotiles are laid using the standard 3 step layout procedure This is detailed on page 22 Always lay tiles in half bond Envirotiles are clipped together using the two clips on the underside at ...

Page 19: ...rd Always lay the roof system to half bond Always provide a 5mm gap between tiles to accommodate expansion contraction The roof tiles incorporate design features that maintain straight plumb lines to ensure straight vertical bonding Each roof tile has an embossed centre mark line located at the head of each roof tile this mark provides the correct positioning for the purpose of cutting half tiles ...

Page 20: ...n the tiles are joined Then slide this tile into the dry verge as shown Next clip this cut tile into the starter rail as shown and rest the top over the batten using the lugs as guides to hook on Take the first tile and cut off the right hand connecting strip using a hand saw see above Use a full tile to start and cut off the right hand connecting strip 11 INSTALLING THE ENVIROTILES 11 2 INSTALLIN...

Page 21: ...r than a half single tile Note Envirotile single and double sized tiles are interchangeable and can be used at gable ends if required The double tiles are ideal for infilling large runs quickly and for use when cutting around rooflights dormers chimneys etc When the first row of tiles has been fitted and spacings adjusted securely fix down the tiles using the fixing points D and J Note that in the...

Page 22: ...he installer reaches the top course of batten at the apex Continue installing tiles to the roof area using the 3 tile step method until the roof area is covered in full 1 Start the 3 step tile procedure 2nd course with a half tile and 2 full tiles 2 Start the 3rd course with 2 full tiles 3 Start the 4th course with a half and full tile 4 Start the 5th course with a full tile 11 INSTALLING THE ENVI...

Page 23: ...ewing through the abutment soaker Ensure that the edge of the eaves bar starter rail aligns with the edge of the abutment soaker channel At the ridge apex mitre the soaker as illustrated Note If more than 1 length of abutment soaker is required ensure that the 2 sections overlap each other by a distance of at least 150mm After fixing the abutment soaker correctly overlap install the wall flashing ...

Page 24: ...ing if required Leave a gap of 38mm between the abutment wall edge and end of roof tiles The 38mm gap between the parapet wall and roof tile edge provides the installer with enough room to engage the patented interlocking features into the surround tiles 12 ABUTMENT WALLS 12 1 INSTALLING TILES AT ABUTMENT WALLS Tiles shown for illustration only Always fit the roof tiles using the 3 step approach s...

Page 25: ... overlapped by a minimum distance of 100mm either side of the apex When the ridge roll is correctly placed into position remove the tape protection strip to permanently bond to the top eaves course tile surface preventing water ingress Run the ridge roll so that it buts up flush with the abutment wall ensuring an overlap at the top edge of the soaker channel VENTILATED RIDGE ROLL ENV330RIDGEROLL 1...

Page 26: ...xture point for the 90mm x 6 3mm Stainless Steel Pozi Pan Self Tapping ENVSCREW90 required to permanently fix two ridge sections together Start the mechanical screw fixing procedure from the right hand gable end using the fixing hole R on the apex at each end Now cut the left hand ridge cap moulding to length fit and secure At a gable end fit the left hand gable end cap moulding At an abutment wal...

Page 27: ...ascia boards can be installed note that it may be beneficial to fit the gable end fascia boards before other stages depending on the material used Gable end fascia boards Gable end fascia boards Gutters Gutters 14 FINAL STAGES 14 FITTING THE GABLE ENDS FASCIA BOARDS AND GUTTERS ...

Page 28: ...he roof installation apply for a range of construction details Note The roof pitch governs the recommendations of airflow per metre run required On rafter pitches above 15 degrees it will require 10 000 mm m of airflow per metre run and on pitches below 15 degrees 25 000mm of airflow per metre run for conformity to recommendations outlined in BS5250 2016 level Hip beam Ridge beam Fascia board fitt...

Page 29: ...ped see page 11 for full details by at least 100mm to ensure water tightness FITTING FELT SUPPORT TRAYS If using plywood panels above rafters the installer should ensure that there is a ventilation gap of 25mm at the apex ridge area to allow for interstitial condensation to escape At the hip beams please ensure that a minimum gap of 20mm is provided to compensate for both ventilation and panel exp...

Page 30: ... the plywood roof panel at each hip Please note that the Eaves Bar Starter Rail ENVEB is an integral part of the Envirotile Roof System It has been specifically designed to provide both the secure patented holding features for the first course of roof tiles as well as added ventilation to the underside of the roof covering which allows for built up condensation and moisture to escape through the v...

Page 31: ...ong Overlap the universal eaves support tray by a minimum distance of 100mm Using a sharp utility knife or equivalent cut the underlay straight at hip edge in line with the panel edge Always overlap above courses by a minimum distance of 150mm Use Duo Plus Tape ENVTAPE to seal the overlap layers ENVIROLAY ABUTMENT WALL DETAIL Run the Envirolay to the wall face and crease the edge to create a turn ...

Page 32: ...ach end of each roof face and run a line as shown Adjust the line so it is level the starter rail allows for some tile adjustment We recommend marking the line on the roof face as a reference Starting at the right hand side of the roof face clip a DOUBLE TILE into the starter rail locate and position the tile and trim to match the hip as shown Ensure that you leave 20 25mm of clearance at the edge...

Page 33: ...that the first tile and the last tile are double tiles Once the first course is fitted securely fix the tiles to the plywood panels Using the same procedures detailed for gable wall roof types on page 24 working right to left along the roof face fit 3 tiles at a time Always securely fix each course before fitting the tiles on the course above Continue fitting 3 tiles in stages until the roof is co...

Page 34: ...s fitted securely fix the tiles to the plywood panels Using the same procedures detailed for gable wall roof types on page 24 working right to left along the roof face fit 3 tiles at a time Always securely fix each course before fitting the tiles on the course above Continue fitting 3 tiles in stages until the roof is covered On the left hand side ensure that you always fit a double tile on the hi...

Page 35: ...ge roll on the top ridge batten and lay over the ridge ensuring that the tops of the tiles on either side are covered Remove the tapes and secure to the tiles Repeat for the hip battens and trim to suit At abutment walls run the ridge roll to the flashing RIDGE ROLL ENV330RIDGEROLL HIP ROLL ENV180HIPROLL On a warm roof construction the installer may fit an abutment wall channel or use a simple fla...

Page 36: ...o place using the bedded batten as a fixture point for the 90mm screw fixings required to permanently fix two ridge sections together Start the mechanical screw fixing procedure from the right hand side of the roof using the fixing hole R on the apex at each end Then cut the left hand ridge cap moulding to length At an abutment wall cut the ridge cap moulding so there is a 2 3mm gap between the fl...

Page 37: ...hip caps drill a hole to accommodate 2 fixings as per 2 full hip caps Lay out and interlock the hip sections together loosely along the full length of the hip when correctly aligned permanently fix into place using the bedded batten as a fixture point for the 90mm length screw fixings required to permanently fix two sections together Hip cap moulding Hip cap end moulding Ridge to apex cover mouldi...

Page 38: ...THE GUTTERS With all tiles installed and secured the gutters and downpipes can be fitted Timber Roofing Membranes Fixings Deeplas Roofline Marshall Tufflex Guttering Felt Support Trays Silicones and Sealants Cleaning Products Tools DON T FORGET YOUR PROJECT COMPLETERS 24 ...

Page 39: ...late Grey ENVSLRCSG Dark Brown ENVSLRCBR Terracotta ENVSLRCTR Anthracite Grey ENVSLRCBK Gable End Cap Size L 28mmxW 325mmxH 178mm Slate Grey ENVSLGEPSG Dark Brown ENVSLGEPBR Terracotta ENVSLGEPTR Anthracite Grey ENVSLGEPBK Hip Cap Size L 425mmxW 165mmxH 70mm Slate Grey ENVSLHCSG Dark Brown ENVSLHCBR Terracotta ENVSLHCTR Anthracite Grey ENVSLHCBK Hip End Cap Size L 180mmxW 165mmxH 90mm Slate Grey E...

Page 40: ...Anthracite Black ENVSTRCAG Slate Grey ENVSTRCGY Dark Brown ENVSTRCBR Terracotta ENVSTRCTR Gable End Cap Size L 30mmxW 300mmxH 170mm Anthracite Black ENVSTGECAG Slate Grey ENVSTGECGY Dark Brown ENVSTGECBR Terracotta ENVSTGECTR Hip Cap Size L 425mmxW 150mmxH 70mm Anthracite Black ENVSTHCAG Slate Grey ENVSTHCGY Dark Brown ENVSTHCBR Terracotta ENVSTHCTR Hip End Cap Size L 180mmxW 150mmxH 70mm Anthraci...

Page 41: ...ize L 600mmxW 48mmxH 12mm Eave Bar ENVEB Square to Round Pipe Adaptor Size 110mm Square to Round Pipe Adaptor ENVSRPA110 Flexitube and clips Size 112mm Flexitube and clips ENVFXCL Standard Lowline Vent Size L 365mmxW 325mmxD 11mm Profile Anthracite Grey ENVSTLVTAG Grey ENVSTLVTGY Brown EENVSTLVTBR Terracotta ENVSTLVTTR Standard Cowl Vent Size L 365mmxW 325mmxD 11mm Profile Anthracite Grey ENVSTCVT...

Page 42: ... Plus Tape Size Dx40mmxL 6000mm Duo Plus Tape ENVTAPE Fixings 90 x 6 3mm SS Pozi Pan Self Tapping Screw ENVSCREW90 32 x 4 2mm SS Pozi Pan Self Tapping Screw ENVSCREW32 Screw Cover Cap Size Large Anthracite Grey ENVSCCLAG Grey ENVSCCLGY Brown ENVSCCLBR Terracotta ENVSCCLTR Screw Cover Cap Size Small Anthracite Grey ENVSCCSAG Grey ENVSCCSGY Brown ENVSCCSBR Terracotta ENVSCCSTR Aluminium Hip Roll Siz...

Page 43: ...DESIGN GRID 4 3 ...

Page 44: ...00 988 7307 Deeplas Roofline Deeplas Window Boards Twinson Decking Twinson Premium Cladding Internal Wall and Ceiling Panels Full product range Roomline PVC U Skirting Deeplas Embossed Cladding Skypod Lantern Roofs Slateskin GRP Sheet Tile System Rainwater Shower Panels Coastline Lightweight Composite Cladding Equinox Tiled Roof System Twinson Fencing ...

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