Greater London · England
Sand mastic for sash & case windows in Lampton, Greater London
We cover Lampton for traditional burnt sand mastic around sash and case windows and doors in stone and brick. Old sealant removed completely, joints prepared properly.
- Mastic dropping out of the joint
- A silicone bead on a sash window that spoils the look
- Mastic round period door frames that has failed
Surface by surface
Stone surrounds
Stone openings are rarely perfectly straight, so the joint varies in width. We shape it by hand to follow the stone.
Brick reveals
We rake out the old mastic and pack deep voids before pointing.
How we handle sand mastic in Lampton
On many period windows, sand mastic looks right and suits the building. On modern frames we’d normally use a flexible sealant, and we’ll talk through which suits your home. We work on sash and case windows, period & listed homes and brick reveals, and people most often call us about silicone on a period window that looks wrong and cement or filler used on old window joints that has cracked.
Many London homes are flats, with windows high above the street. Who looks after the outside of the frames can depend on the lease, so check that first.
Big or small, it’s backed by our 12-month guarantee in Lampton and across Greater London.
- Location
- Lampton (TW3, TW7, TW5)
- Wider area
- Greater London
- Guarantee
- 12 months on all our work
- Quote
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
The process
There isn’t much for you to do on the day. Point us to the joints and we will get on with it. The job generally takes anything from a few hours to a full day, depending on how many windows. For a job in Lampton, parking and access are the things to plan: let us know about parking, the floor we will be working on and any lift or shared entrance.
- We look at the surrounds with you and agree the joints to renew.
- We remove the old, loose mastic.
- We pack any deep voids first.
- We apply the mastic by hand and shape it.
- We dress the finish so it sits neatly against the masonry.
How to prepare
- Tell us about access, such as stairs, a lift or high-level joints
- Move anything stored near the joints
- Try not to wet indoor joints just before the visit
Getting a quote
Every job is quoted individually, so the first step is telling us about yours. Simply phone 0345 464 0079 or drop us an email and describe the job, and photos are welcome.
Advice
Why act early in Lampton
Not every draught comes from the sashes themselves. Open mastic joints round the box can let air in and new mastic seals them. In London conversions, one flat’s bathroom is often above another flat’s ceiling, and a slow leak from a failed seal can end up in the flat below. Putting it right early is much less trouble.
Some things make a job bigger or smaller: the old material and how easily it comes out, any mould to treat, and whether the work is at height. Your quote takes all of that into account.
Why us?
- Any old sealant cut out fully, not covered over
- Arbo and Everbuild products
- Homes, businesses and hotels
- An ARBOMaster approved applicator
See our cost guide or customer reviews.
Places near Lampton
More services for Lampton
Common questions in Lampton
I let a flat near Hounslow station. Can you help?
Yes, we work for landlords and agents. You can phone 0345 464 0079 or email us with the address and a few details, and we’ll give you a fixed price before any work starts.
Can parking be tricky for a visit in Lampton?
It can be, so it helps to tell us about permits, visitor bays or off-street space when you book. The visit is then planned around what’s available.
Can you seal over the old sealant?
No, because it fails. We remove every bit of old sealant first, so the new joint bonds to clean surfaces.
Do you guarantee sand mastic work?
You get our one-year guarantee on every job.
Do I have to be there?
Access is agreed with you when the job is booked. Indoors, that normally means someone at home.
Do you come to Lampton?
Yes. We work in Lampton and the rest of Greater London, as part of our work across South East England, London and Scotland. To book, ring 0345 464 0079 or drop us an email.
Do you remove the old sealant?
Yes, always, and completely. New silicone does not stick to old silicone, so the joint is cleaned back first.
What do you put in the joint?
Quality sealants from brands including Arbo and Everbuild, picked for each joint. We will tell you what we’re using and why.
Honest limits
Sealant is not the answer to every problem, and we’d rather say so up front. It won’t solve:
- Cracked or broken glass
- Rotten sashes, sills or window boxes (a joiner’s job)
- Sashes that rattle, stick or won’t open
Not sure which it is? You can call 0345 464 0079 or email us and we’ll tell you honestly before booking.
Where we work in Lampton
- Sash and case windows
- Tenement windows
- Timber door frames
- Brick reveals
- Stone surrounds
- Period & listed homes
Frames and glazing around Lampton
In London conversions and blocks, the lease decides who is responsible for the frames, so it’s worth checking before booking. With historic houses such as Osterley House (about 1.1 miles north) nearby, there’s older building stock in the area around Lampton as well as newer homes. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window.
Schools such as Alexandra Primary School are buildings too, and the mastic around its windows and doors needs looking after like any other building’s. Homes close to St Luke include some older properties, and the joint between an old wall and a newer frame is generally the first place rain gets in. For landlords with property near Hounslow station, any sash windows need sound mastic to keep draughts and rain out.
Lampton is about 2 miles north-west of Twickenham, in Greater London. Lampton gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. Across Greater London, we cover 764 places, Lampton among them. For nearby work, see our London page (12 miles or so).
Postcode districts we cover here for sand mastic: TW3, TW7 and TW5. If you need sand mastic at a property on York Road, Star Road and Pears Road or a nearby road, our applicators can take on the job. Close by, we work in Hounslow (1 mile south-east), Spring Grove (1 mile north-east), Osterley (1 mile north-east), Woodlands (1 mile south-east) and Heston (1 mile north-west). We also work in nearby towns such as London (12 miles east), City of Westminster (9 miles east), Marylebone (10 miles east), Kensington (7 miles east), St Pancras (11 miles east) and Shoreditch (13 miles east).
Landmarks near Lampton
In Lampton, that means homes and buildings near Moon Under Water pub, Inwood Park and Kingsley Academy, among other places. The nearest railway station is Hounslow station, roughly 0.9 miles south of the centre. Other landmarks nearby include Museum of Army Music (1.4 miles south) and Hounslow Hospital (0.8 miles south-west). Open spaces near Lampton include Long Wood and Garden Lake.
Should I try it myself first?
If you are set on DIY, put the effort into preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it fails, we can still redo it.
The biggest DIY mistake is sealing over old sealant. Silicone doesn’t stick to old silicone, so it lifts and traps water and mould underneath. All the old material has to come out first.
What affects the quote in Lampton
Jobs vary more than people expect. The main factors:
- The number of rooms or windows
- When we can work, for business premises
- The product the joint needs
- Whether there’s mould to deal with
Combining jobs into one visit is generally more efficient than separate visits. We will send you a clear quote for the lot.
What we need to know
Before you ask for a quote, have a think about:
- Photos by email, if that is easy
- Any previous sealing or DIY work
- What’s wrong with the joints now
- The rough size of the job
For sand mastic in Lampton, phone 0345 464 0079 or send us an email. Tell us what the problem is and where, and we will agree the price before any work begins.
Landlords, agents and businesses in Lampton
For anyone letting property in or around Lampton, several properties can be quoted together. Just tell us the addresses and what each one needs.
Mouldy or split sealant often shows up at the end of a tenancy. Several properties can be quoted together.