Lean To Roofing Kit 2m x 4m

Medium coverage roofing system for outdoor spaces and extensions

The lean-to roofing kit, measuring 2 metres long by 4 metres wide, provides optimal medium-scale coverage for homeowners in Bristol and Bath seeking to create practical weather protection for outdoor areas, extensions, or functional spaces that enhance property usability without overwhelming smaller gardens or courtyards. This well-proportioned system delivers a versatile 8 square metre coverage area, making it ideal for covering medium-sized patios, creating compact carports, building workshop spaces, or providing shelter for outdoor dining areas in properties ranging from Bristol's Victorian terraces to Bath's Georgian townhouses, where balanced proportions are essential for maintaining architectural harmony. The 4-metre width offers excellent versatility for standard residential applications, making it perfect for covering typical driveways, creating comfortable outdoor seating areas, or providing weather protection for garden storage and utility spaces that are increasingly valuable in urban properties, where outdoor space optimisation is crucial. The lean-to design ensures efficient water drainage while maintaining practical headroom, making it particularly suitable for residential applications where reliable weather protection enhances year-round outdoor living and property functionality. This roofing system is engineered to withstand the variable weather conditions of Bristol and Bath, from coastal winds affecting the city's exposed areas to the frequent rainfall common throughout the region, ensuring dependable long-term performance and protection. The kit is perfect for homeowners, garden designers, and residential contractors throughout Bristol and Bath who require practical, appropriately-sized roofing solutions that deliver adequate coverage while maintaining proportionate scale with existing property features and meeting local planning considerations that favor well-designed additions to residential properties.

Select the type of polycarbonate and colour required.

Price includes (Actual coverage 4.310mm)
4no 1050mm Polycarbonate sheets x 2m long
5no x 2.5m bars to fix to timber
2no x 2m edge fillets
4no 1050mm sheet closures
1no x 150mm flash band
Anti-dust tape

Installation Guide

Step one 

Fix your first edge bar as shown in dia one slide the edge fillet up the grove on the bar as shown then cut the bar to length, remembering to allow for a 50MM over hang into the guttering. Cut the aluminium base 2MM longer than the predetermined length of the polycarbonate sheeting, and this will allow for the end cap to fit later.
Drill and Fix the bar into position screw with no six screws at 3-400MM centres, Ensuring the drip on the edge trim is in required place and neat from the external view. Repeat on opposite end Dia 1.
N.B Where bars are butting against a wall the edge trim is not required fit bar only.

Step two 

You can choose to cut all sheets and then evenly space them out, or you can work towards cut a sheet in the middle, once you have decided start fixing centre bars, in your required position. drill and fix the bars with screws at 3-400MM centres

IMPORTANT REMEMBER TO LEAVE A CLEAR EXPANSION GAP OF 4MM BETWEEN THE BAR AND THE POLYCARBONATE SHEETS.

Step three 
Ensure all the rubber gaskets in the bars are flat with no bumps.

Step four
Cut your polycarbonate sheets the length if not already done ensuring that all swarf removed use a vacuum or condensation free airline to remove swarf (never try to wash it out). Now fit anti dust tapes to the sheet use the solid foil tape to the top of the sheet and the vented tape to the bottom of the sheet peel of backing tape and stick in place as shown. These tapes reduce condensation and keep out insects and dust so ensure they fitted correctly. Now peel about 50MM of the protective film down both sides and place the sheet into place.

Step Five
Position PVCU caps so that the toothed legs locate inside the centre of the aluminium base press down firmly then hammer down lightly with a  rubber mallet or equivalent until caps lockdown. As you work across the roof, complete flashing as you go (see tips).
When the flashing is complete, and all caps are in place remove the protective covering

Step Six
Fit the end caps into place. Now cut sheet closures to the length between bars and push in to place as shown

Tips

For polycarbonate cut to size order your polycarbonate sheets after you have fitted your bars and we can cut blow and tape your sheets for you to the correct size (width and length), NB does not forget to allow for expansion when ordering. (P.O.A)
If using a lead flashing ensure the lead (recommended) is fitted before the sheets and dress down as you install the roof panels Fit your lead in sections of 2m and seal the overlap 100mm with a lead mate.

Cleaning, use mild soapy water try a small panel first to ensure there is no reaction never use solvent-based cleaners.
You should not need to use silicone; however, if you do only use good quality low modulus neutral clear silicone.
For a good quality roof that will last the test of time avoid wide sheets try to use the recommended widths 980MM or less for roofs up to 4m long and 700mm wide for roofs 4m plus
Fix wall plates top and bottom fix joists as you fix polycarbonate bars
Use 9mm economy fascias all round and square white gutters for a maintenance-free finish.
Not Sure? Email us we are here to help.