EWI Verge Trim

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external wall insulation verg trim

External Wall Insulation and Verge Trims

EWI  Verge Trims are suitable for most situations requiring the capping of external wall insulation systems and rendering systems. 

A verge trim is a thin strip of plastic or metal that sits at the top of the wall where the insulation meets the roofline. There are many different types and styles of trim, but the purpose is always the same – to create a water tight seal that prevents any moisture penetration the stystem.

Some roofs have a wide enough soffit to allow the insulation to sit underneath. In this case, good quality beading will be sufficient to create a seal with the soffit board, and water ingress should never be a problem. However, not all roofs have a wide enough soffit to accommodate the insulation, and in these cases, a verge trim is usually required.

solid wall insulation varge trim

Extending the Roofline – The Ideal Solution

This is particularly useful on gable walls where the tiles stop abruptly at the edge of the gable wall. In this case, timber batons can be installed and a new row of tiles added to create an extended roofline on the property. The insulation can then fit under this perfectly, creating a perfect water proof solution. The cost of this procedure is around £1,000-£1,500 however, so some customers want a more affordable option. We always stress to customers that this option is the best, and that it is worth spending the extra money to do the job right.

Verge Trim and Creating a Water Proof Seal

Where there is a facia board, it is usually possible to tuck the verge trim behind it, or up under the roofline. The join is then sealed with silicon sealant to help prevent water ingress. This is usually sufficient where there is guttering to help the water drain away, but in more exposed places the silicon can fail quickly and allow moisture behind the system. This is bad news, so it is important you discuss with your installer the best method for finishing your verges and that you are confident in the integrity of the design of the system. At Be Constructive, we try to minimise the use of silicon – it is a really useful tool, but unfortunately it will not last the lifetime of the system and need replacing every few years in the most vulnerable places. This means that we cannot guarantee silicon on our insulation systems, and try to avoid using it wherever possible. Sometimes it is the only way to do the job within the budget available however, and in these cases it will be up to the customer what option you want to take and what cost is associated with that work.

Sometimes lead can be used to help create a waterproof seal. Lead is an expensive material, but it is really useful because it can bend into any shape to fit the verge in question. The only question is where the lead needs to finish along the roof in order to ensure water can’t get down the back of it.

What does the verge trim look like, well you can see some examples on our site. There are a range of colours and styles available, although most customers will opt for the white trim as it is the most in keeping with many properties in the UK.

external wall insulation veerge trim insulation

FINDING AN APPROVED OR RECOMMENDED INSTALLER

We have teamed up with EWI Pro to help provide homeowners with an approved and recommended installer network across the UK. EWI Pro are one of the UK’s leading render manufacturers and our experiences with them have always been extremely positive. They have excellent technical support and a vast array of quality products. Their list of approved and recommended installers are specialists, so by choosing one of them to complete your project, you can be assured that the work and the materials installed on your property will be to the highest standard.

If you are looking for an approved or recommended EWI Pro installer, please send an inquiry by filling in your details on the form provided!.







    Unsure of what materials you require?

    Use our EWI solid wall insulation materials calculator to calculate exactly what materials you will need for a particular job.

    EWI Pro Training Academy

    We are delighted to announce we have partnered with the EWI Pro Training Academy in Aylesbury to bring you a series of professional installer training courses.

    We have 6 unique courses to choose from, each targeting a different area of the External Wall Insulation installation process.The training courses are completed over the course of a half-day or full day, and installers will receive an EWI Pro certificate upon completion.

    Why this programme?

    The EWI Pro Training courses are designed with an all-round approach to learning. You will be given the chance to learn about installing EWI systems through a mixture of classroom and practical, hands-on training.

    This programme also allows you to learn from experienced EWI professionals with years of industry experience. This way, you will leave the course equipped with the most relevant skills.






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