Surrey · England
Sand mastic for sash & case windows in Selsdon, Surrey
Sand mastic in Selsdon from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Gaps between timber frames and stone or brick
- Gaps round a timber door in stone or brick
- Patchy fillers round a sash window
Sand mastic in Selsdon, done properly
We work across Selsdon renewing sand mastic on sash windows and doors. Each joint is raked out, prepared and pointed by hand, finished to suit the masonry. If you are dealing with window mastic to renew ahead of painting and modern sealant on a period surround, we can put it right.
Homes around Selsdon range from older properties to newer houses, and their windows range just as widely. The right sealant depends on the frame and on what it sits in.
You are covered for a year from the day we finish. If anything isn’t right with it, ring 0345 464 0079 or drop us an email.
- Where
- Selsdon (CR2, CR0)
- Wider area
- Surrey
- Cover
- A year, on every job
- Quotes
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Your questions about sand mastic in Selsdon
Do you cover smaller places like Selsdon?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
Do you cover Selsdon for sand mastic?
Yes. Our work covers London and the South East, and Selsdon is part of that. Just ring 0345 464 0079 or drop us an email with a few details of the job, and we’ll give you a clear price.
Can you match the sealant colour?
We help you choose a colour that suits. The choice depends on the product the joint needs.
Can you do several jobs on one visit?
Yes. Several rooms, windows or areas can go on one quote.
Do I need permission for sand mastic on a listed building?
Yes, it’s worth checking. Ask your local planning authority whether consent is needed for work on a listed home or in a conservation area.
How long will you be here?
Most jobs take anything from a few hours to a full day, depending on how many windows, including preparation and clearing up. Your quote will say how long we expect yours to take.
Is the work guaranteed?
Our 12-month guarantee covers every job.
Do you have insurance?
Yes. We’re fully insured.
What sealant work can’t fix
Sealant isn’t the answer to every problem, and we’ll tell you before work begins. Sealant will not put right:
- Rotten sashes, sills or window boxes (a joiner’s job)
- Damaged stone surrounds
- Whether work needs listed building consent
If in doubt, call 0345 464 0079 or email us and we will say what we think.
Where we work in Selsdon
- Period & listed homes
- Tenement windows
- Timber door frames
- Stone surrounds
- Brick reveals
- Sash and case windows
The process
A visit follows a simple pattern: we check the joints, protect the area around them, do the work and tidy away. Most jobs take anything from a few hours to a full day, depending on how many windows. A visit to Selsdon is planned like any other: the time, the access and where to park are agreed in advance. Outdoor jobs depend on a dry day, since sealant needs a dry surface.
- We check the window surrounds and agree which joints need renewing.
- The loose and crumbling mastic is raked out and the joint cleaned.
- We pack any deep gaps so the mastic sits at the right depth.
- The mastic is mixed, pressed into the joint by hand and shaped.
- The mastic is finished to sit tidily against the stone or brick.
Preparing for the visit
- Tell us about any previous sealing or DIY attempts
- Plan for the work area to be out of bounds to pets and children
- Tell us if parking is tricky
How to get a quote
We quote each job on its own. Just phone 0345 464 0079 or drop us an email with the details.
Read more
For landlords and businesses
We work for landlords and agents as well as homeowners. Sealant work between tenants is a simple way to keep a property in good order before the next move-in.
From a single let to a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a 12-month guarantee.
Signs you need sand mastic in Selsdon
Water gets into small cracks in the mastic and pushes it out. Exposed elevations generally fail first.
People usually contact us when they notice one of these:
- A silicone bead on a sash window that spoils the look
- Gaps round a timber door in stone or brick
- Tired mastic found when preparing windows for paint
- Open joints round the window box
For site and facilities teams at buildings such as Selsdon Primary and Nursery School, its window and door frames need their mastic kept sound, just like a home’s.
What your quote should include
- Which sealant they’ll use, and why
- Whether VAT is included
- Who does the work, and how experienced they are
- What happens if the job turns out different
Should I try it myself first?
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions, and the work is guaranteed for a year.
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and does not move well, and the joint depth matters as much as the finish.
Towns and villages near Selsdon
More services for Selsdon
Frames and glazing around Selsdon
The South East is one of the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. With historic houses such as Addington Palace (about 1 mile north-east) nearby, there’s older building stock in the area around Selsdon 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.
Letting a property close to Sanderstead station? Then cracked sand mastic around sash windows lets in the draughts tenants complain about. If you live in an older home near St Francis, the joint between an old wall and a newer frame is normally the first place rain gets in.
Selsdon is about 2 miles south-east of Croydon, in Surrey. We provide sand mastic to homes and businesses in Selsdon, as part of our work across Surrey. 395 places in Surrey are on our list. Our London page covers work nearby.
Here we cover the CR2 and CR0 postcode area for sand mastic. Streets in the area include York Road, Byron Road and Abbey Road. Neighbouring places we cover for sand mastic include Forestdale (1 mile east), Addington (1 mile north-east), Sanderstead (1 mile south-west), Coombe (1 mile north-west) and Farleigh (2 miles south-east). Larger places within reach include Epsom (9 miles west), Horley (13 miles south-west), Redhill (9 miles south-west), Ewell (9 miles west), Reigate (10 miles south-west) and Caterham (4 miles south).
Near you in Selsdon
In Selsdon, that means homes and buildings near The Sir Julian Huxley pub, The Quest Academy and Littleheath Woods. For rail, the closest station is Sanderstead station, roughly 1.7 miles west. Other landmarks nearby include St George's Walk (2.7 miles north-west) and Croydon Airport Visitor Centre (2.9 miles west). For a walk, there’s Duppas Hill and Bramley Bank.
Why it’s worth doing now in Selsdon
Silicone might seem the quicker option, but it can look wrong on a period surround. Sand mastic suits the building and finishes neatly against the masonry. In an older home around Selsdon, damp from a failed joint can get into timber and plaster, which is far harder to put right than the sealant itself.
Instead of a standard rate, we price the job in front of us: the amount of work, the old material and the access. You’ll know the price before we begin.
Why us?
- Arbo and Everbuild products
- More than 20 years in sealant work
- Anti-fungal silicone where joints get wet
- We never seal over old sealant
Take a look at what affects the cost and our reviews.
Aftercare tips
How long the joints last depends on use and care. Here’s what we suggest:
- Inspect the joints round the windows every year or so
- Make sure water runs off the sill
- Sort the mastic before the decorators arrive
- Do not paint over the new mastic
Do not touch or press the mastic while it hardens. It forms a skin fairly soon, but takes longer to harden fully.
Sound mastic protects the frame. Once it fails, water can sit against the timber and timber that stays wet can rot.