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8-10 week supply & installation lead time
10 year warranty, 60 year life expectancy
Designed by you, made to measure by us
98% of our customers would recommend us
Whole window U-values as low as 0.8W/m2K
The lipped casement window (also known as “storm-proof”) is one of the most popular styles of window in the UK, featuring a sash that overlaps the frame.
Bereco timber lipped casement windows include a decorative edge on the opening sash to soften their appearance. Plus they’re available in two different profiles with either pencil round or ovolo mouldings, making them suitable for not only modern properties but traditional homes too.
Book a consultationLipped casement or stormproof windows are massively popular in the UK. No matter whether you have a more traditional or contemporary property style, the lipped casement is a great addition to any home.
The lipped casement window is available in a number of styles and colours so you can create a unique window for your home.
Made from sustainable timber means our lipped casement windows are an incredible natural insulator, helping to improve your home’s energy efficiency.
Designed with the best materials our lipped casement windows are robust, hard-wearing and built to last a lifetime. We also offer a 10-year warranty on all our products.
Our lipped casement windows are Secured by Design and Part Q certified to make sure homes are properly protected against unwanted intruders.
Colour
Every lipped casement window is beautifully factory finished using the most environmentally friendly water-based paint or stain. Choose from RAL Classic, RAL Design, NCS and BS colour charts or match to Farrow & Ball, Earthborn or Fired Earth colour collections. With single or dual colour options you can create the perfect match to the exterior facade and interior decor of the property.
Paint & Stain FinishesRAL 9016
Linen
Parchment
BS.10.B.15
RAL 9001
Parlour
RAL 1015
BS.10.C.31
BS.10.B.17
RAL 7032
RAL 7030
RAL 6019
French Green
RAL 6021
RAL 6005
London Dust
RAL 5014
RAL 5013
RAL 5022
RAL 3002
RAL 3011
RAL 3005
Smoke
RAL 7035
RAL 7040
RAL 7037
RAL 7015
RAL 7016
RAL 7024
RAL 9005
RAL Colour
Glazing
Glazing is an important consideration for any project, with our timber lipped casement windows you can choose from single glazing, SlimLine (narrow cavity) glazing, double glazing, or triple glazing. Add glazing bars to create traditional and contemporary glazing patterns using our applied 16mm, 25mm and 35mm glazing bars.
We offer acoustic double glazing with a range of impressive sound reduction ratings, from 33dB to 42dB and a variety of obscure glazing patterns are available offering varying privacy levels (rated 1-5 with 5 being the highest level of obscurity). Our obscure, translucent coloured and opaque painted glass also makes for a great feature.
Frosted (Level 5)
Stippolyte (Level 4)
Niagara (Level 5)
Cotswold (Level 5)
Kocie (Level 4)
Chinchilla (Level 3)
Kora (Level 4)
Delta (Level 5)
Ironmongery
Our lipped casement windows come with multi-point espagnolette locking systems that are handle operated. You can choose from an exclusive range of four handles and decorative stays in both modern to traditional styles in up to 10 different colours. Click the link below to view our full range of window ironmongery.
Window IronmongeryBrass
Bronze
Polished Chrome
Polished Brass
Brass Plated
Stainless Steel
Antique Brass
Polished Chrome
Stainless Steel
Security
Feeling safe and secure in your home is essential for your peace of mind, that’s why our timber lipped casement windows are Secured by Design accredited, and 3rd Party tested and certified to Part Q. They come with modern easy clean or egress friction hinges, secure night vents and child safety restrictors. They utilise high-security multipoint espagnolette locking handles and are internally glazed as standard meaning that the glass cannot be removed from the outside.
Secured by Design
PAS 24
ERA Total Security Guarantee
Performance
We’re pleased to share that our products successfully meet industry standards, are fully accredited and have even received certifications related to their security and performance. Check out the complete range of product specifications below.
FSC® 100% Certified Timber
BlueSky BS644 General Window Performance
BlueSky PAS24:2016 Enhanced Security Windows
BlueSky Timber High Performance Window Scheme
BlueSky Noise Reducing Windows
Secured by Design
UKCA Mark
UW RANGE: 0.9 – 1.4 W/m²K
ACOUSTIC RANGE: 29 – 42 dB
G-VALUE RANGE: 0.50 – 0.65
AIR PERMEABILITY: 600 PA
WATER TIGHTNESS: 400 PA
WIND LOAD RESISTANCE: 2400 PA
EXPOSURE CATEGORY: 2000 Special
AIR LEAKAGE: 0.2m³ p/h
Totally bespoke sizes and designs of up to 5 metres and five lights wide using any combination of fixed and opening sashes, and available in traditional and heritage mouldings.
Create an oriel or bay feature window or go all out with curved frames or swept heads (curved plates). Plus, create traditional styles like horizontal, cottage, Georgian, or marginal bar using our applied 16mm, 25mm and 35mm glazing bars. You can even divide panes with arched or gothic bar designs or make a statement with lead in traditional designs like diamond, square, or Queen Anne style.
Get in touchAll of our products are manufactured using FSC® 100% engineered laminated timber. We offer redwood (Scots Pine) and hardwood (Dark Red Meranti) and both come with the same extensive warranty.
When comparing the two materials, the hardwood has more of an open grain structure giving it more of a textured finish, particularly when stained.
Book a consultationEnjoy the silence with our lipped casement windows which have noise reduction capabilities up to 42dB.
We offer double glazing with warm edge spacer bars as standard, and all of which can offer U-values starting from 1.2 W/m²K. This means our windows are fully compliant with the updated Part L Building Regulations and are incredibly energy efficient.
Our lipped casement windows are also part of BlueSky high-performance window scheme and offer exceptional draught-proofing and weather performance all-year-long.
Get in touchOur double-glazed timber windows and doors exceed the new Part L 2023 building regulations and can achieve impressive U-values starting from 1.2 W/m²K – which is 15% better than the guidelines. Whereas our triple-glazed windows and doors achieve U-values starting from 0.8W/m²K which is 43% better than what’s stipulated in the regulations.
Find out moreOur lipped casement windows are naturally renewable, carbon neutral and are made from only sustainably sourced FSC® 100% certified softwood or hardwood. The care and attention we give to our timber before and during the manufacturing process ensures a 60 year+ life span, 10-year warranty and low maintenance for life.
SustainabilityOn flush casement windows the sashes are flush with the frame externally, whereas on lipped or stormproof casement windows the sash overlaps the frame.
At Bereco, our timber flush casement windows feature double weather seals that offer excellent weather performance and keep out the draughts. In addition, both our flush and lipped window styles come with the ability to adjust and increase compression on the weather seals.
All of our lipped casement windows are fitted with easy clean friction hinges.
Yes, we can offer these in both side hung or top hung (regency casement) designs, as well as Tilt & Turn (opening in) window styles.
Currently, Part Q is only applied to new dwellings, so if you are building a new home or converting a non-dwelling (e.g. a barn) into a home then it is a required. If you are renovating a home then it is not a requirement. However, we would certainly recommend that you look for a manufacturer who builds security as standard as we do. Look for espagnolette locking and 3* high-security cylinders (neighbourhood watch approved) where possible.
Whether you’re a homeowner working on a renovation project for your home, an architect looking for specific windows and doors, or a trade professional building new homes and properties, we offer a tailored service to help you budget, design, and order bespoke timber windows and doors.
HomeownersProfessionalsOrder corner samples of popular products including stain, ironmongery and bars delivered straight to your front door.
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As a dedicated manufacturer of quality timber windows and doors, we are part of a number of specialist memberships and schemes. Check out the full list below.
We’re pleased to announce our brand has featured in several national magazines and publications over the years. Here are some of the most recent places our products have been showcased.
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