Do you need a Price?

If you are adding a skylight to a flat roof, you must decide on whether to construct your own upstand or purchase one from your rooflight supplier.

An Upstand or Kerb is what keeps the rooflight off of the roof’s surface, and is required by building regulations for safety and weathering reasons. The upstand must protrude at least 150mm above the roof and a recommended minimum pitch of at least 3 degrees.

Should I make my own upstand?

There are advantages to both making your own and purchasing via your supplier.

Cost is generally the main reason people choose to make their own. A simple upstand can be constructed from excess timber on site minimising waste or using standard timbers found at any local wood supplier. Creating your own upstand also allows your to weather your roof without the rooflight being on site protecting it from any potential damage.

walk on cross sectionA purpose manufactured upstand benefits from improved thermal performance, weathering and air tightness. The profile has been designed and engineered to fit your exact rooflight  giving you peace of mind that your skylight is going to fit perfectly.

Our Opening Hinged Rooflight, Tripple Glazed Rooflight and Access Rooflights are all supplied with an insulated timber upstand as standard. If you are purchasing a Fixed Rooflight from us, we can provide this as an optional extra.

If you would like to build your own upstand, you can use this guide or visit our technical downloads page for specific measurements.

Looking For An Easier Way?

The easiest way to ensure your rooflight is installed correctly is to purchase a made to measure insulated upstand from your rooflight supplier. At EOS Rooflights all of our stock products are available as lid only or with optional upstand.

How do i create my own upstand?

There will be lots of ways to make an upstand but we will give a quick guide to the most basic option and also show the recommended way of creating your upstand, we will not show a step by step guide as this should be done by someone with more advanced carpentry skills.

Please Note: We only recommend attempting to build this yourself if you are confident in basic carpentry.

Basic Upstand Guide

We are basing this upstand to suit our EOS rooflights – fixed (lid only). Different systems will have slightly different requirements (upstand width and frame details) so make sure to study the relevant technical drawings.

Stanley knife, level and elctric drill

Equipment Required:

  • Drill
  • Stanley Knife
  • Spirit Level

Plus:

  • Screws to fix timber pieces together. These will need to be long enough to affix two pieces of 47mm each.
  • 8 Gaskets

Materials Required:

  • Timber – 47mm (width) by 150mm (height). The total length will need to cover the dimensions of your roof light twice, plus an excess of 752mm (we’ll explain why later!).

Example:

If you have an EOS F3 (1000mm x 1500mm) unit which is 1000mm in length (A and B in the above image), and 1500mm wide (C and D), the total length of timber you will need is:

(A+B+C+D) x 2 + 752mm = 10,752mm (just under 11 metres)

You Might Also Need:

  • Furring strips – these will be useful if you need to pack the upstand to reach the required minimum 3 degree drop.

Cutting Timber Lengths:

The first step to putting together the upstand is to cut the timber to the correct size.

  • The timber kerb will need to be 84mm – 94mm in depth, this is easily achieved by screwing 2 lengths of timber together (e.g 2 x 47mm timbers = 94mm)

Width

  • Cut four lengths of timber at A and B length, plus 188mm per piece (this is where the stray 752mm comes in – 188mm x 4 = 752mm). In the given example (EOS F3), this would mean cutting four pieces that are 1188mm each.

Length

  • Cut four lengths of timber at C and D length, E.G. An EOS F3 Rooflight, requires four pieces at 1500mm each.

Preparing For The Build:

The upstand will need to be completely flat, so be certain that the wood is also sanded so that it is level and stands at a minimum of 150mm.

You might wish to check each piece using your spirit level.

Putting The Frame Together:

  • Fix the matching lengths of timber along the long side. This will create four pieces that are 94mm in width, maintaining the 150mm height.
  • Next, fix all the timber pieces together to make a box shape. This should make the inside edge of your upstand the same dimensions as the structural roof opening. Ensure the frame is square by measuring corner to corner.

Checking The Pitch:

Now that you have constructed your upstand, you need to ensure that there is at least a 3 degree drop on the roof light (at least 5mm over every metre). The maximum pitch of our roof lights is 15 degrees.

Check this using the spirit level, and if it is below 3 degrees, you will need to pack the space using furrings.

Ready For Use:

You are now ready to position and fix the upstand over the structural opening. Before doing so, be sure to measure diagonally across the opening and adjust accordingly to check that the upstand is square in line.

Once ready to affix the skylight unit, you will need to refer to your individual product’s installation guide. You can find a Fixed installation guide here.

Recommended Upstand Detail

The more advanced detail is the equivalent of creating a mini stud wall. The purpose of this is being able to insulate the inner cavity which gives greater thermal performance and sound insulation. We will not give a step by step guide but you can find some resources to assist you creating this.

Recomended timber upstand for rooflights

Have any questions about upstands? Head on over to our Contact Page to get in touch with our team or take a look at our Fixed Rooflights, Opening Rooflight, Eco Triple Glazed Rooflights, or WalkOn Rooflights for Flat Roofs pages for more information and to see our stock sizes.

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4.86 Average

201 Reviews

Anonymous

Friendly, helpful and informative customer service. Good product and quick delivery.

Posted 1 month ago

Kairen

Beautifully designed, high spec, and look fantastic. Simple website and helpful service from guys at EOS. Prompt delivery. This is a quality product.

Posted 1 month ago

Lee

Morning big thanks to Chris and his team, very helpful their product is by far the best complete roof light system out there. I highly recommend this company will be using them again, ps also very easy to install Kind regards Lee

Posted 1 month ago

Sarah

They were extremely efficient and most of all knowledgable about their products - they offered detailed information and were extremely patient with all my questions. They managed to ship the product very quickly and it arrived to us the same week. Very happy with EOS. The product itself is great!

Posted 1 month ago

Clifford Nicholson

Very efficient and easy to deal with.

Posted 1 month ago

Tim Lancaster

The roof light that I ordered arrived on time and appears to be very well made. The instructions were clear and my builder had no problems installing it, other than in getting it onto the roof as it is very heavy. The roof light looks good and I am glad that I was able to buy one with such a good U value as I wanted the light without the loss of heat.

Posted 1 month ago

Mark Harris

Great service, nothing is a hassle and super helpful

Posted 1 month ago

Carl Smith

Prompt delivery, excellent quality and easy to install, a great product.

Posted 1 month ago

Anonymous

EoS and their staff were very helpful in design and specification for a large skylight. They gave top quality support in the runnup to installation and were very accommodating in helping to source correct vehicle to crane in said (very heavy) skylight.

Posted 1 month ago

Kay

I'm delighted with my EOS roof lights. I had to choose roof lights that were slightly smaller than I wanted, due to design constraints, but the amount of light provided is wonderful and unexpected. The whole kitchen is lit up, even when the curtains are closed across our french doors. Many thanks EOS, A happy customers.

Posted 1 month ago

Timothy Rickford

Very happy with the service from EOS staff and quality of the product. Would definitely use again.

Posted 1 month ago

Anonymous

Great after sales support and service from knowledgeable staff. Also a really good quality product.

Posted 1 month ago

Anonymous

Excellent service! The windows are gorgeous and their staff are always so available and happy to answer questions on short notice, and I had a lot!

Posted 1 month ago

Sarah Willett

Really helpful on specifying size and advice on installing.

Posted 1 month ago

Anonymous

Really nice company - fast, efficient and pleasant in all my dealings with them. There was a delivery error and they worked hard to find a solution as quickly as possible and did everything they said they would. Really impressed all round - when you are having an extension on your house, you end up dealing with lots of suppliers. I wish they were all as good as EOS.

Posted 1 month ago

Rebecca Phillips

Eos gave us a really good service, good communication throughout, most importantly the roof lights are amazing - really good quality and look great

Posted 1 month ago

Luke Carroll

Ease of installation and provided a huge amount of light to our extension. We chose the electric opening option which is fantastic for ventilation.

Posted 2 months ago

Rebecca Phillips

Very good service but most importantly excellent quality roof lights, very pleased thank you

Posted 2 months ago

Anonymous

They delivered what I wanted!

Posted 2 months ago

Anonymous

Good service and communication, competitive prices. Very helpful and understanding.

Posted 2 months ago

Colin Nelson

Great product, helpful customer service staff who answered any question I had.

Posted 2 months ago