Surrey · England
Warlingham Sand Mastic
We cover Warlingham for traditional burnt sand mastic around sash and case windows and doors in stone and brick. Old material cut out, joints cleaned and sealed neatly and a 12-month guarantee.
- Patchy fillers round a sash window
- Silicone on a period window that looks wrong
- Gaps round a timber door in stone or brick
What the job involves on each surface
Brick reveals
Sand mastic is also used where timber frames meet brick. It suits older brickwork.
Tenement and terrace windows
Tenements and terraces often have many sash windows with ageing mastic. We can do one window or several.
How we handle sand mastic in Warlingham
For a listed home or one in a conservation area, ask your local planning authority if consent is needed before window work. Sand mastic is often favoured as a like-for-like material. We work on tenement windows, sash and case windows and timber door frames, and people most often call us about a silicone bead on a sash window that spoils the look and weathered mastic on the most exposed windows.
In a smaller place like Warlingham, some walls face open ground and catch the full force of the weather, so exposed windows and doors face the weather head on. The mastic around frames on those walls tends to age faster.
Each job carries a 12-month guarantee, large or small.
- Place
- Warlingham (CR6, CR3)
- Region
- Surrey
- Guarantee
- 12 months on all our work
- Quote
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
FAQs for Warlingham
Will you come out to Warlingham?
Yes, Warlingham is covered. We work across London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
Is Warlingham in your area for sand mastic?
Yes, Warlingham is within the area we cover. We work across London and the South East. You can call 0345 464 0079 or email us and tell us what needs doing.
Can new sealant go over the old?
No, and we never do. It can look neat for a few weeks, but the new bead soon lifts. The old sealant has to come out completely.
How long does sand mastic take?
As a guide, most jobs take anything from a few hours to a full day, depending on how many windows. Bigger jobs take longer, and we’ll tell you how long to expect.
Is it worth trying it myself?
That depends on the joint. High-level, external movement and fire-rated joints are professional jobs.
What is sand mastic?
It’s a mix of sand and a linseed-oil-based binder. It’s applied by hand and finished to sit neatly against the masonry.
What information do you need?
Tell us what needs doing and where, plus photos if you have them. We’ll ask anything else we need to know.
Will you leave a mess?
Very little: the area around the joints is protected first, and we tidy up before we go.
What happens on the day
At the end, we look at the finished work together. The visit itself generally takes a few hours for a single window, longer for several, depending on how much there is to do. Parking around Warlingham is normally easier than in a town centre, but mention any lanes, gates or long drives. For outside work, side access and the height of the joints help us plan.
- We start by checking each surround and agreeing the joints to renew.
- Old, loose mastic is raked out and the joint cleaned.
- Deep voids are packed so the mastic is the right thickness.
- Sand mastic is mixed and applied by hand, then shaped to the joint.
- The mastic is finished to sit tidily against the stone or brick.
Preparing for the visit
- Let us know about parking restrictions
- Mention any sign-in or site rules at work premises
- Move anything stored near the joints
Get a quote
Want a quote for sand mastic? Please phone 0345 464 0079 or email us with a few details. We’ll explain what we’d do and send you a clear quote before we start.
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What sealant work can’t fix
New sealant can’t fix everything, and we will tell you before any work starts. It won’t solve:
- Planning or listed building consent (your local planning authority decides)
- Sashes that need overhauling
- Damaged stone surrounds
Not sure which it is? You can call 0345 464 0079 or send us an email and we’ll tell you honestly.
Surfaces we seal
- Brick reveals
- Timber door frames
- Period & listed homes
- Stone surrounds
- Sash and case windows
- Tenement windows
Warlingham homes and the weather
With historic houses such as Addington Palace (about 3.5 miles north) nearby, there’s older building stock in the area around Warlingham as well as newer homes. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window. Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
For landlords with property near Upper Warlingham station, cracked sand mastic around sash windows lets in the draughts tenants complain about. For site and facilities teams at buildings such as Warlingham Village Primary School, larger buildings have plenty of frames, and the mastic around each one ages. If you live in an older home near Church of All Saints, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Warlingham is about 3 miles east of Coulsdon, in Surrey. Homes, rented property, offices and hotels in Warlingham is covered for sand mastic, old or new, large or small. Every job comes with our one-year guarantee. Our Surrey coverage runs to 395 places, Warlingham among them. There’s also a page for London, about 13 miles away.
We work across CR6 and CR3 for sand mastic and the streets around it. Whether your property is on Church Road, Redvers Road and The Green or anywhere close by, our applicators can take on the job. You’ll find Warlingham on the B269 and B270, so it’s easy for us to get to. Neighbouring places we cover for sand mastic include Hamsey Green (1 mile north), Whyteleafe (1 mile west), Chelsham (1 mile east), Farleigh (2 miles north-east) and Kenley (2 miles north-west). Larger places within reach include Epsom (9 miles west), Horley (10 miles south-west), Redhill (7 miles south-west), Ewell (9 miles west), Reigate (8 miles south-west) and Dorking (13 miles south-west).
Local landmarks in Warlingham
We work in homes and buildings around Warlingham School, Blanchman's Farm and The White Lion Public House and the streets around them. The nearest railway station is Upper Warlingham station, roughly 0.9 miles west. Other landmarks nearby include Warlingham Park Hospital (1.3 miles north-east) and East Surrey Museum (2 miles south-west). Not far away are Nore Hill and South London Downs National Nature Reserve.
Aftercare tips
After the cure time, these simple habits help:
- Don’t paint over the new mastic
- Plan mastic work ahead of painting
- Have rotten timber repaired before new mastic goes in
- Avoid heavy scraping on the mastic joint
Do not run silicone over the new mastic. If anything cracks, get it looked at rather than patching it.
An open joint round the box lets weather through. Left, the gap tends to get bigger.
How we quote for sand mastic
We do not publish a price list. The quote depends on:
- The type of sealant required
- When we can work, for business premises
- The size of the job
- The old material and how stubborn it is
Combining jobs into one visit generally makes better use of the time than several visits. We’ll send you a clear quote for the lot.
Asking for a quote
Before you ask for a quote, have a think about:
- A few pictures by email, if you can
- The type of property
- What the problem is, such as mould, gaps, leaks or cracking
- How we’d reach the joints
Every job is quoted individually, so the first step is telling us about yours. Just ring 0345 464 0079 or send us an email with the details and send pictures if you have them.
Should I try it myself first?
A DIY attempt does not rule out a professional job. We remove it and do the joint properly, so tell us about it when you ask for a quote.
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions, and the work is guaranteed for a year.
Why act early in Warlingham
Filling over old, loose mastic does not last. Raking out and preparing the joint gives it a sound base so the new mastic stays put. Around Warlingham, water from a failed joint in an older home can soak into timber and plaster, and that is a much bigger job than renewing the sealant.
What you pay reflects the work, not guesswork. That is why we ask a few questions first and agree the price before starting.
Why us?
- Neat joints and a tidy finish
- More than 20 years in sealant work
- ARBOMaster approved applicator
- We are fully insured
Take a look at what affects the cost or customer reviews.