Certass Auditors carry out thousands of installation inspections over the year and we’re happy to say that proportionately to the number of inspections carried out, we get few non-compliances. This is testament to the quality of the contractors that are our members.
However, there is one non-compliance that crops up that could easily be avoided. “I don’t want any non-compliances, what is it?” I hear you say. The Building Regulation in question is Part L – Conservation of Fuel and Power which sets out the required thermal performance for windows and doors.
Usually the installed product does comply with Part L. The issue is that when the Auditor carries out the inspection, they need to see the evidence to prove the installed product complies; but that evidence is not always to hand.
There are two ways to prove compliance
1) Window Energy Ratings (WER):
The purpose of a Window Energy Rating is to allow one window’s energy performance to be directly compared to another under standard conditions. All replacement windows either have to be rated C or better. There are 2 ways to obtain a WER certificate:
- Buy your frames and units from a supplier who is part of a WER scheme. The supplier will then supply you with a WER certificate in their name or if they are a member of the TRR corporate scheme they will be able to input your company details in the certificate.
- If you want total freedom of supplier you can become a member of a WER scheme yourself and have WER labels in your own name.
- Full simulation reports carried out in line with EN 10077-2,
- Hot box test reports
- U-value calculations carried out in accordance with EN 10077-1 provided by approved operators
Going down the U-Value route to prove compliance is not the most consumer friendly way to prove compliance as they are unlikely to be easily understand what a U-Value is, whereas consumer immediately understand he relative merits of a WER label.
The Easiest Way
By far the easiest way to comply is by providing a Window Energy Rating Certificate to your customer; this can usually be sourced from your fabricator or by joining a Window Energy Rating Scheme. As well as providing a certificate to your customer, you should also keep a copy of the WER Certificate and delivery note or invoice in the installations job file so when the Auditor requests the evidence to prove compliance you can lay your hands on it.
Call our sales team on 01292 292 095 or visit certass.co.uk for more information.
Domestic Replacement Glazing Works
What You Can and Can’t Register With a Competent Person Scheme
Many works must meet Building Regulation requirements but not all works in dwellings are notifiable to the Local Authorities. Therefore, Competent Person Schemes can only register works on a contractor’s behalf with the Local Authority that are deemed notifiable. Generally speaking, conservatories and porches are excluded from Building Regulation notification requirements.
Conservatories and Porches
There are some exemptions from the energy efficiency requirements and Local Authority notification in Building Regulations for some conservatory and porch extensions. The exemption for conservatories or porches in Building Regulations:
- Which are at ground level;
• Where the floor area is less than 30 m2;
• Where the existing walls, doors and windows in the part of the dwelling which separates the conservatory are retained or, if removed, replaced by walls, windows and doors which meet the energy efficiency requirements; and
• Where the heating system of the dwelling is not extended into the conservatory or porch.
In circumstances where any conservatory or porch does not meet all the requirements above, it is not exempt from Building Regulation compliance and therefore, must comply with the relevant energy efficiency requirements and is notifiable.
Certass Guidance for registration of existing porches with Certass
When determining if replacement doors or windows are notifiable, you need to consider the following two factors:
- If the porch/conservatory was removed, could the remaining door to the property be considered an external grade door? i.e. is it weathertight and secure?
- Is the porch/conservatory heated from the property’s main heating system? i.e. is there a radiator in the porch/conservatory fed from a boiler that heats the rest of the property?
If the door in the example above is not an external grade door at the time of the replacement, then the windows and doors in the porch/conservatory are notifiable.
If the porch is heated from the main property heating system, then the replacement windows and doors in the porch are notifiable irrespective of whether the secondary door is / is not external grade.
Where a wall opening has been widened as part of the replacement windows and /or doors installation then these woks cannot be registered with a Competent Person Scheme and these works must be notified via the relevant Local Authority or through an Approved Inspector.
If as a member of Certass you have any doubt over the correct registration requirements, please contact us and one of our technical team will be more than happy to discuss your requirements with you. Telephone number: 01292 292099.