West Sussex · England
Lambs Green Window Mastic
Mastic around window and door frames, sills and patio doors for Lambs Green, backed by a one-year guarantee. Ask us for a quote.
- White mastic on grey or black frames
- Draughts coming in around windows and doors
- Damp patches on the reveal after heavy rain
About our window mastic in Lambs Green
Over two decades of sealing frames has taught us which products suit which walls. We are ARBOMaster approved and fully insured, and every job is covered by a 12-month guarantee. Typical jobs include old mastic that has gone black or come away and draughts coming in around windows and doors, across timber windows & doors, patio & French doors and aluminium frames.
Mastic can only go onto a dry, clean joint, so window work in Lambs Green is booked around the forecast. Let us know about access to all the frames, upstairs ones included.
All of our work is guaranteed for twelve months, in Lambs Green and everywhere else we cover.
- Where
- Lambs Green (RH12)
- Region
- West Sussex
- Guarantee
- One year on every job
- Price
- A clear quote up front
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Lambs Green: your questions answered
Is Lambs Green in your area for window mastic?
Yes, Lambs Green is within the area we cover. Our work covers London and the South East. You can call 0345 464 0079 or email us and let us know what needs doing.
Is Lambs Green within the area you cover?
Yes, we do. We work across London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
I rent my home. Can I book you?
Yes, but check with your landlord or agent first. Many landlords are glad to have it sorted.
Can landlords and businesses book you?
Yes, often. We can quote for several properties at once.
Can new sealant go over the old?
No, because it fails. We remove every bit of old sealant first.
Do you have sealant for grey or black windows?
Yes. Grey and black frames get grey or black sealant, and wood-effect frames generally suit brown.
What do you put in the joint?
It depends on the joint: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. Brands we use include Arbo and Everbuild.
Are you insured?
Yes. We’re fully insured.
When it is not the sealant
A few problems are outside what sealant work can do:
- A door that needs adjusting, rehanging or new seals
- A failed sealed unit that has misted up
- Damp problems in the wall away from the window
If in doubt, phone 0345 464 0079 or email us and we’ll say what we think before booking.
What we seal
- Composite doors
- Patio & French doors
- uPVC windows
- Timber windows & doors
- Window sills
- Aluminium frames
Leave it or put it right?
Not every sealant suits a window. Interior caulk and bathroom silicone are not made for exterior frame joints. A low-modulus exterior sealant keeps its stretch through hot and cold weather. Older cottages and farmhouses around Lambs Green can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
Commercial jobs are quoted on the same basis as homes: how much there is to do, how we reach it and what it needs, along with when we can work on site. Ask us for a quote and we will go through it with you.
Why Lambs Green customers choose us
- A 12-month guarantee on all work
- More than 20 years in sealant work
- Quality sealants from Arbo and Everbuild
- We are fully insured
See what affects the cost and our reviews.
Landlords, agents and businesses in Lambs Green
Whether it’s one flat or a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a 12-month guarantee.
Letting agents often deal with us directly. Tell us the address, the job and how access works and we’ll give you a quote.
Frames and glazing around Lambs Green
Rainfall in the South East is lower than in much of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
In the older streets around St Mary Magdalene church, the joint between an old wall and a newer frame is generally the first place rain gets in. Managing a site like Rusper Primary School? Then its window and door frames need their mastic kept sound, just like a home’s.
Lambs Green is about 3 miles west of Crawley, in West Sussex. For window mastic in and around Lambs Green, please ring 0345 464 0079 or send us an email for a quick quote. We’re based in Crawley and cover West Sussex. Our area takes in 371 places across West Sussex, from the larger towns to small villages.
Jobs for window mastic in RH12 works the same way as everywhere else we cover. Nearby, we also carry out window mastic in Rusper (1 mile west), Ifieldwood (1 mile north-east), Bewbush (2 miles south-east), Ifield (2 miles east) and Russ Hill (2 miles north). Within a short drive, we also cover Crawley (3 miles east), Horsham (4 miles south-west), Haywards Heath (11 miles south-east), Burgess Hill (12 miles south-east), East Grinstead (11 miles east) and Broadfield (3 miles south-east).
Local landmarks in Lambs Green
We work in homes and buildings around Ifield Community College. Lambs Green’s nearest station is Faygate station, roughly 1.4 miles south of the centre. Other landmarks nearby include Crawley Museum (3.1 miles east) and Crawley Hospital (2.7 miles east). The countryside around Lambs Green includes Warnham LNR and Tilgate Lake.
What we are called out for in Lambs Green
Timber windows bring their own problems. Old mastic gets painted over and cracks under the paint, and timber moves with moisture as well as temperature.
People usually contact us when they notice something like this:
- Black, perished sealant on frames
- Gaps where the sill meets the wall
- Hard, cracked sealant around windows
- Damp patches on the reveal after heavy rain
If you let a flat or house near Faygate station, sound mastic around windows and doors keeps out the draughts and damp that tenants notice first.
Before you book anyone
- Who turns up on the day
- When the joint can take water or movement
- Whether all the old sealant comes out first
- Which sealant they’ll use, and why
What happens on the day
All our tools and materials come with us in the van. Once we’ve agreed what’s being done, we protect the area and start. It normally takes a morning for a couple of windows and a door. In a small place like Lambs Green, access is usually the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- We check how each frame can be reached safely.
- All the failed sealant is cut away, along with any loose debris.
- The surfaces are cleaned and left dry, and primed where the sealant calls for it.
- Deep voids are backed, then the sealant is gunned in.
- The joint is shaped to shed water and the area tidied.
How to prepare
- Let us know if you’ve seen damp or leaks
- Tell us if parking is tricky
- Plan for the work area to be out of bounds to pets and children
Get a quote
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints, and email pictures if that is easy.
Related advice
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Other services in Lambs Green
What the job involves on each surface
Aluminium frames
Bi-fold and sliding aluminium doors have long frame joints, and the threshold joint takes a lot of water. We prepare and reseal every joint, backing the deep ones.
Composite doors
If the door itself is draughty, the issue may be the door seals or hinges rather than the frame mastic. We seal the frame and let you know about anything else.
Keeping the joints in good condition
No joint lasts for ever, but care makes a real difference. Our tips:
- Ventilate rooms so frames do not stay wet inside
- Make sure the drainage slots aren’t blocked
- Keep paint off silicone joints
- Clean frames with a soft cloth and soapy water
Most silicone sealants will not take paint, so mention any painting plans before we start. There are paintable sealants for joints that need it.
A failed joint lets water into the wall a little at a time. Often the first sign is a damp patch inside or flaking paint on the reveal. Early resealing stops it reaching that point.