2012

Guardian warm roof conversion system

Installation Guide

www.guardianroof.co.uk

Conservatory walls consist largely of glazed elements including windows and doors that

may include structural mullions or may be strengthened with internal structural

reinforcement inside hollow sections. Modern conservatories are likely to be marked in

accordance with BS EN 14351-1:2006 + A1:2010.

The Guardian Roof System is designed to be of similar weight to a glass roof of equal

size, so it follows that the existing glazed walls, if correctly specified for a the original

glazed roof, should be capable of supporting the replacement Guardian Roof System.

It is the sole responsibility of the installer to establish the structural suitability of the

existing conservatory wall system, to establish the location of any structural or

reinforcing elements, and to ensure that the Guardian Roof System is fixed to the existing

structural elements so that gravity and wind loads are transferred safely through the

existing walls to the conservatory foundations.

Timber battens72 mm high

performance insulated

plasterboard

Choice of tile finishes

Membrane

Rafter

40 mm high performance insulation

Guardian warm roof construction

Exterior grade plywood

25 mm high performance

insulation (timber batten

cut back for clarity)

The following guide has been created to assist in the fabrication and installation of the

Guardian Roof. Please note that each roof is individual and will be fabricated to suit

various shapes and sizes.

Each roof supplied will be accompanied by a roof layout plan and this guide.

Your fabricator will be available to provide installation technical support.

Roof Layout Plan

Please refer to the roof layout plan prior to commencing installation. It is very important

that the roof fits the windows layouts and that all the windows are fully reinforced. All

components are numbered to match the roof layout plan for ease of installation.

Tools required

Cordless drill, angle grinder, silicone gun, tape measure, hand saw, 10mm spanner

and 10mm nut spanner, 10mm ratchet, snips, staple gun, screwdriver, foam gun and

expanding foam.

Step 1: Box gutter

Step 2: Ringbeam

Fix box gutter to wall and seal using suitable

sealant. Place ringbeam on the side lip of the

box gutter and fix in place by screwing up

through the lip with a 25mm window screw.

Ensure not to puncture the box gutter itself.

For the best internal finish use insulated

plasterboard under box gutter using timber

battens.

Cleats to be inserted internally into the

ringbeam and fixed using 25mm stainless steel

window screws.

Ringbeam and packer should be installed

flush with inside of window frame.

Use 100mm stainless steel window screws

at 600mm centres.

Remove existing glazing and fix through packer

and eaves beam.

Cleats to be fixed at 32mm from the outside

angle of the ringbeam on die lines.

www.guardianroof.co.uk

Step 3: Assemble rafters

Gable rafters to be bolted to house wall and

secured at 300mm centres using suitable

fixings determined by the wall construction.

Ensure Stainless Steel Cleats provided are

used when fixing to the house wall at

the top and bottom of wall rafter.

Stainless steel cleats must also

be used at gable front end.

Edwardian conservatory Victorian conservatory option

Fix rafter to ringbeam using pre-installed cleats

and bolts provided (loosely tighten at this stage).

Edwardian stainless

steel cleat

Victorian stainless

steel cleat

www.guardianroof.co.uk

Using location pin provided to temporarily fix

arm to spider.

Temporary fix remaining rafters including any

pre-engineered window framing (if required).

Step 3: Assemble rafters

www.guardianroof.co.uk

Ensure all roof sections are aligned to the pre-

engineered positions and tighten into place.

For edwardian/victorian hip cleats tighten bolts

on rafters first before tightening to ringbeam.

Tighten pre-installed grub screws using alan

key. Please ensure grub screws are not

overtightened.

Edwardian

aluminium cleat

Victorian

aluminium cleat

www.guardianroof.co.uk

Step 4: Timber battens

Fit 25mm timber battens at maximum 400mm

centres to underneath of rafters. Fixings are to

be 50mm window screws.

Batten out entire roof structure. Batten over

window opening and cut back to suit.

Step 5: Rafter Insulation

From outside insert 40mm insulation board

between rafters.

Seal all gaps with

expanding foam.

www.guardianroof.co.uk

Step 6:

Exterior

plywood

& window

frame

Install roof window frame into pre-formed

opening within rafters.

Fix frame to timber ply through brackets using

screws supplied within roof window pack.

Timber out roof as per schedule. Timber sheets

to be fixed at 200mm centres using 20/25mm

self drilling screws.

Fix brackets to the V notch on roof window

frame prior to installation.

Fix timber sheets to rafters.

www.guardianroof.co.uk

Step 7: Membrane & roof tile

Cover with vapour permeable underlay with a

vapour resistance of less than 0.25MNs/gram as

required by BS5250: 2002. Overlap all joints of

underlay by 150mm and staple down to timber

sheets. Over run ringbeams by 100mm and up

outer wall by 50mm.

Torn underlay up window frame and staple to

topside.

Fix watercourse to outer wall.

Starting bottom right corner of the roof with a

full roof tile, fix to lip of ringbeam and into the

corner of the watercourse (allow 4 x 16mm

screw fixings per tile).

All tiling is from right

to left. Complete one

row at a time.

For the second course always

start with half a tile.

www.guardianroof.co.uk

Dependant on height of roof window 1-3

tiles should be fitted below window before

bottom flashing is installed.

Roof window flashing to be installed to roof

window pack instructions.

www.guardianroof.co.uk

Step 8: Standard Ridge & end cap

Dress over hip, cut and bend

to shape at intersections

Optional small ridge

Optional end capping

Apply foam tape to underneath the 25mm

treated timber batten. Using the profile ridge

and hip for position fit timber battens and

screw into place.

Follow instructions 8a and 8b for end capping.

Fix rafter cap over delta ridge profile at verge.

In cases of stretched Victorians and off angles

on ridges, a smaller ridge is available to allow

for angle adjustment. Paint cut edges with

touch-up kit.

Position delta ridge over batten and fix

side on. Use touch up kit provided to hide

screw heads.

3-way capping 5-way capping Rafter cap

www.guardianroof.co.uk

Step 9: Internal Insulation

Step 10:

Gutter adaptor

Fit box gutter adaptor into the box gutter and

seal using suitable wet sealant. Seal between

ringbeam/extension and window line with

appropriate sealer. Also seal against house wall.

25mm PIR Insulation to be used under Box

Gutter for insulating value and to avoid the

risk of condensation.

Install 25mm insulation between battens and

apply expanding foam to the spider assembly.

Please ensure elecrical wiring is in place before

25mm PIR is positioned.

10a

Step 11: Gutter

Twist fit gutter brackets to ringbeam prior to

installing gutter and downpipe.

11a

Cut and mitre 72mm insulated plasterboard, fix

into position, tape all joints and seal against

window frame.

www.guardianroof.co.uk

Step 12: Valley Gutter

Place valley tray on top of breather membrane

within the valley itself.

Fix flaps either side directly into membrane

and ply.

Tile into valley cutting at angle of roof.

Seal where necessary.

12a

Optional mansard ceiling

Use appropriate low voltage down

lighters with cowl.

www.guardianroof.co.uk

Notes:

call FREE: 0800 0665832

email: info@guardianroof.co.uk

www.guardianroof.co.uk

Important Guardian Roof have taken great care to ensure that the information in this installation guide is accurate and is supplied in good faith. However Guardian Roof issues

this guide without warranty or guarantee of any kind and accepts no responsibility as to how the information is interpreted. Health and safety regulations are the sole responsibility

of the installer and totally unconnected to Guardian Roof. The Guardian Roof is continually evolving and changes to product and specification can change at any time.

Updates to this guide will be posted on our website immediately and all customers will be informed by electronic mail. The website is www.guardianroof.co.uk