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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4.82 Average

153 Reviews

Leanne Wallser

Fantastic service, super helpful getting it all to Jersey and product is perfect for us. Thanks

Posted 6 days ago

Dr J Trinder

Swift. Delivery. Arrived as described. Straight forward payment arrangement. Great advice and support when planning project. Motorised rooflight works remarkably quietly. A little costly however compared to some competition.

Posted 1 week ago

Richard Simmons

They have provided us with a quality product

Posted 2 weeks ago

Anonymous

Product and delivery as expected.

Posted 2 weeks ago

Alan Oliver

Good product, delivered on time, and looks great in our new flat roof extension.

Posted 1 month ago

Mike Guirguis

I actually bought my roof lights on the back of EOS’s reviews section, and now my extension is nearing completion, (finally) I wanted to pass on my experience. I couldn’t be happier with my decision, its clearly a very high quality product and they look amazing in our new kitchen. They are heavy so make sure you have lots of strong guys on site. The staff are all very helpful and seem very knowledgable. Highly recommended them.

Posted 1 month ago

Nicole Gray

Excellent customer service. Really took the time to listen to our needs and help us find exactly what we wanted, within the time schedule from our builders. They were also flexible as the schedule shifted and always available for any questions. And beyond that, our roof lights look so amazing! So, I'm a very happy customer.

Posted 1 month ago

Ben Jennings

EOS were very helpful during the sales process, liaising directly with my builder to confirm requirements (when I was way out of my depth). My builder’s feedback post installation is that the windows are heavy duty and top quality, even when compared with more expensive options he’s fitted in the past. He’ll be recommending EOS for future builds.

Posted 1 month ago

Bill Greenaway

Product was just as promised and delivery and information excellent. We are very pleased with it.

Posted 1 month ago

Jason Berry

Really helpful when I called to order my roof lights explaining delivery info, weights, fitting instructions etc.., Really accommodating in facilitating a specific delivery time and date (at relatively short notice); finally the finished product, robust, elegant and fantastic. First class.

Posted 1 month ago

Andy

Very competitively priced!! Went the extra mile to help me out and gave all the support, advice and technical details that I needed for our project (Triple glazed - PassivHaus project) Will be sure to use EOS on any further Rooflight orders!!

Posted 1 month ago

Anonymous

Lovely skylight... I bought the fixed 1500*1000 and opening 1500*1000, both with upstands. Thanks to Chris for all his help. Tex - DA8

Posted 1 month ago

Ollie Quaie

EOS were very helpful to me from my first inquiry to the order to the delivery. They phoned me back promptly with any additional information I needed. High standard of window which I’m very happy with and also competitively priced.

Posted 1 month ago

Sarah Miller

EOS offer a great range of products with good prices and stock availability. The team in the office are very helpful and nice people to do business with.

Posted 1 month ago

Anonymous

Very well made rooflights.

Posted 1 month ago

Steve Goward

Excellent product with a very high finish. EOS were very helpful and we are delighted with the rooflight we ordered. Our room looks amazing now we have so much light flooding in to it. We looked at lots of suppliers but we are glad we chose EOS on recommendation from our builder who had used them before.

Posted 1 month ago

Mark Cunningham

The service provided by EOS Rooflights was absolutely outstanding. From the communication via e-mail and telephone, to the quality of the product, I could not fault them one bit. We have now had our rooflights fitted and they look amazing! The joiner said the instructions were easy to follow and the rooflights themselves were easy to fit. Amazing!

Posted 2 months ago

Jake Thomas

We met EOS at the Homebuild Show in Birmingham as we wanted to see the rooflights before we bought them for our extension. We met with Elliot who answered all of our questions and helped out with our plans, as one of the sizes needed amending. The rooflights look beautiful in our kitchen. I would highly recommend EOS to anyone, especially if you this is your first build. Elliot couldn't of been more helpful with answering our queries.

Posted 3 months ago

Anonymous

Excellent product, very stylish and good quality

Posted 3 months ago

Anonymous

Our roof light with rain sensor add so much to our new extension. The window is great. EOS were a great help with waiting for our builders to be ready to install.

Posted 4 months ago

Tim Harris

The EOS rooflight we have installed is fantastic, the light within the room now is beautiful, the rooflight itself is a modern, slick design, it has transformed the space!

Posted 4 months ago