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Multiwall roofing accessories

The following items are used extensively with Multiwall Roofing Sheet.

A typical Lean-to roof application might look like this.

lean to roofing accessories

The accessories are listed below matching the numbers in the diagram.

1. F Profile

aluminium f section

The Aluminium 'F' Section is a rigid, non bending profile used in conjunction with Multiwall sheet. The sheet is wedge fitted into the 'F' prong, providing a tight, secure fit to the sheet edge. You will drill the stem or leg of the 'F' profile and then screw through the side of the aluminium profile into the rafter. Aluminium 'F' profiles are commonly used on the 1st and last rafters in a typical Lean-To or flat roof application. 

In the diagram above, the F profile is used with the stem or leg pointing downwards. It can also be used pointing upwards should your particular application require this e.g. if starting from an adjoining wall. F profiles have also been used lying flat, fixed to the ground. The sheet can then be inserted standing vertically if building a screen or partition.

aluminium f profile bar

Sizes available:

  • 3.0mtr & 4.0mtr length, in thickness matching Multiwall sheet, namely 10mm, 16mm and 25mm

Colours

  • Brown or White painted powder coated aluminium


Transport / Shipping notes

  • Lightweight and easy to transport lying flat. The profiles are rigid and cannot bend or curve, so 3.0mtr or 4.0mtr length clearance is required.


Price / cost:

You can BUY these products on this web site

 

2. Flashtex / LTF profile

Flashtex is a roll of flat, hi tack (sticky) tape available in widths of 8" and 4" and minimum roll length sold is 5mtr rolls (max 20mtrs). It provides a waterproof seal over roof joins and is used commonly where the roof sheet or structure joins the supporting building. 

The outer side is a 'lead look' matt type finish, the other side is the hi tack, sticky side. It is a thin layer of flashtex that has the consistency of very sticky putty and once it touches a surface, it is 'on'. Once pressed in place, it is not designed to be lifted and moved, so care should be taken where placing it and only remove the thin backing cover film when you are finally ready to fix in place.

butyl flashtex

The Lean To Flashing profile (or LTF), is a rigid, shaped aluminium bar that is designed to run along the top of your roof L-R where the roof meets the building. It is angled and can be used for roof pitches between 5° - 45°. We stock in 3.0mtr length in White and Brown, however 6.0mtr is also available from supplier Exitex in Dundalk. (may be subject to MOQ & extended lead time).

lean to flashing profile

Sizes available:

LTF available 3.0mtr 
Flashtex sold in 8" or 4" width, minimum purchase is 5mtr

Colours:

Power coated Brown or White

Transport / Shipping notes:

The LTF bar is rigid and cannot bend or curve, so 3.0mtr clearance is required.

Price / cost:

You can BUY these items on this web site

3. Roof Fixing buttons

Roof fixing buttons are used on intermediate rafters (where capex bars are not used). They are a robust, moulded PVC button, that includes a protruding neck or grommet extension. They are fitted by drilling through the multiwall sheet and then inserting the button screw and screw fixing in place.

roof fixing buttons

It is a common practice to insert silicone into the hole that has been drilled, in order to provide water tight seal when the button is being placed. It is important not to over tighten the screw when fitting, as this can cause the surface of the sheet to be dented, resulting in water seeping or being drawn into the depression.

Sizes available:

Fixing buttons are available in sizes matching the type of Multiwall sheet you are using, so in 10mm, 16mm, 25mm. The fixing buttons look the same, however the fixing screw is longer in each case.

Colours:

Available in White or Brown PVC

Transport / Shipping notes:

Supplied in pack of 10. One packet can usually be posted. if purchasing more that 1 packet a courier charge applies as ti becomes a small parcel.

Price / cost:

You can BUY these items on this web site

 

4. Capex bars / Capex Snap down

Capex bars, from Irish supplier Exitex, are slightly raised, aluminium profiles that have a strip of gasket running along either side of the bar. They are most often used lying flat, running over the join where two sheets meet on a rafter, however they can also be used standing vertically where sheets are being used in a greenhouse or outhouse / shed application. 

capex barThe bars are available in powder coated white or brown and come with their own fixing screws and end caps. They are also pre-drilled and have a length of flat gasket matching the length of the bar. This layer of gasket is placed running down the rafter and the sheet will then lie on top. 

Sizes available:

3.0mtr / 3.6mtr / 4.8mtr / 6.0mtr lengths

Colours:

Powder coated White or Brown

Transport / Shipping notes:

The bars are almost flat, aluminium profiles and are best transported lying flat. The bars do have a natural, gentle curve and will slope away from you down to the ground if you lift or carry one. They can often be transported in larger vans / transits, curtain siders, trucks etc. with the bars inserted in a gentle arch shape. The bars cannot be bent in more acute 'U' shapes or at 90degrees.

Price / cost:

you can BUY these items on this web site

 

Capex Snap down

A variant of the Capex bar, the capex snap down has a rigid, flat aluminium base bar, combined with a UV stable pvc clip down or 'snap down' cover. Capex Snap Down 10-25 is an economy glazing bar ideal for roof canopies, lean-tos and shelters. The Capex Snap Down bar is used when you have rafters running horizontally L-R but you want to insert sheet running vertically N-S.

capex snap down

The '10-25' in the description denotes that this snap down bar is suitable for multiwall polycarbonate thicknesses from 10mm up to 25mm

Sizes available:

3.0mtr / 5.0mtr  lengths

Colours:

Mill finished aluminium base bar, White or Brown PVC snap down cover

Transport / Shipping notes:

Best transported lying flat. These bars have a rigid base and will not bend. You will need 3.0mtr or 5.0mtr horizontal clearance if collecting or transporting.

Price / cost:

You can BUY these items on this web site

 

5. U Profile / RSC

The 'U' profile, also known as a Roof Sheet Closure or RSC, is a pvc 'u' channel that fits on over the taped end of the sheet at the bottom end of the roof (gutter end). It provides an aesthetic finish to the sheet ends and also protects the breather tape from the elements. 

u profile pvc

Sizes available: 

PVC 'u' profiles come in standard length of 2100mm - matching the width of Multiwall sheet (2.1mtr). The profiles are available in 10mm, 16mm and 25mm thickness, corresponding to the thickness of Multiwall sheet.

Colours:

Available in White or Brown PVC

Transport / Shipping notes:

Lightweight and easy to transport lying flat. The profiles are not intended to be bent or curved.

Price / cost:

You can BUY these items on this web site.

 

For further information or assistance on your roof project, contact our office on +353 1 409 8000 or email us info@plasticsolutions.ie