Surrey · England
Tandridge Sand Mastic
Sand mastic for Tandridge, by sealant specialists with 20+ years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Draughts and rain around sash boxes
- Mastic dropping out of the joint
- Gaps where the frame meets the masonry
DIY versus a professional finish
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
Sealing over old silicone is the commonest DIY error. Silicone does not stick to old silicone, so it peels away and traps moisture behind it. All the old material has to come out first.
Sand mastic for homes and businesses in Tandridge
We renew sand mastic around sash windows and doors in stone and brick. Out comes the old, loose mastic, and new mastic is applied and shaped by hand. If you have tired mastic found when preparing windows for paint and weathered mastic on the most exposed windows, we can put it right, whatever the surface.
In a village or hamlet like Tandridge, older cottages and farmhouses often have timber windows set in stone or brick. Older buildings like these don’t always suit modern silicone, so the sealant has to be chosen to suit the building.
You’re covered for a year from the day we finish. If anything isn’t right with it, ring 0345 464 0079 or email us.
- Place
- Tandridge (RH8, RH9)
- Region
- Surrey
- Cover
- 12 months on all our work
- Quotes
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Tandridge homes and the weather
The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. Historic houses like Titsey Place (about 3.4 miles north-east) are a reminder that the area around Tandridge has older buildings as well as new. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window.
For an older house near a landmark such as Church of St Peter, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall. Managing a site like St Peter's CofE Infant School? Then the mastic around its windows and doors needs looking after like any other building’s.
Tandridge is about 2 miles south-west of Oxted, in Surrey. Whether you’re in the middle of Tandridge or further out, sand mastic is available for homes and businesses alike, from flats and houses to offices and hotels. Across Surrey, we cover 395 places, and Tandridge is one of them. Our Crawley page covers work nearby (11 miles or so).
Work in RH8 and RH9 works the same way as everywhere else we cover. We cover properties on Jackass Lane, Tandridge Lane and The Walk. Other places close to Tandridge include Church Town (1 mile north-west), South Godstone (1 mile south-west), Hurst Green (2 miles east), Godstone (2 miles north-west) and Oxted (2 miles north-east). Larger places within reach include Epsom (12 miles north-west), Horley (7 miles south-west), Redhill (6 miles west), Ewell (12 miles north-west), Reigate (7 miles west) and Caterham (4 miles north-west).
Local landmarks in Tandridge
Around Tandridge, our work takes us to homes and buildings near Bay Pond and Oxted School and the streets around them. The nearest railway station is Godstone station, roughly 1.6 miles south-west. A little further out are Bletchingley Castle (3.2 miles west) and East Surrey Museum (3.5 miles north-west). The countryside around Tandridge includes Botley Hill and Mercers Lake.
Also near Tandridge
What else we do in Tandridge
Common questions in Tandridge
Is Tandridge in your area for sand mastic?
Yes. We work across London and the South East, and Tandridge is part of that. Just phone 0345 464 0079 or drop us an email with a few details of the job.
Do you cover smaller places like Tandridge?
Yes, we do. We work across London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
How long does sand mastic take to harden?
A skin forms quite soon, but full hardening takes longer. We’ll explain what to expect before we leave.
What sealant do you use?
Quality sealants from brands including Arbo and Everbuild, chosen to suit the joint. We explain the product when we quote.
Do you take out the old sealant first?
Yes, every time. New sealant won’t bond properly to old, so any old material comes out before anything new goes in.
Do you work for landlords and businesses?
Yes. As well as homeowners, we work for landlords, agents, businesses and hotels.
What does sand mastic cost?
The cost depends on the size of the job, access and how much old sealant has to come out. Ask us for a quote and we will talk you through it.
Where is Mr Mastic based?
Mr Mastic is based in Crawley. We cover Tandridge and the rest of Surrey.
Work for landlords, hotels and businesses
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
If you manage several properties in or around Tandridge, jobs at different addresses can go on one quote. Just tell us the addresses and what each one needs.
How the visit works
The work is kept neat and contained to the joints we’re treating, so you can get on with your day. Expect the work to take a few hours per window, depending on the condition of the joints, and we tell you how long to leave it before we go. For a village or hamlet like Tandridge, the journey is planned in advance: tell us about narrow lanes, gates, long drives and where we can park. We bring what the job needs, so it can be finished in one trip where possible.
- First, we look at the surrounds with you and agree what needs doing.
- Old, loose mastic is raked out and the joint cleaned.
- Deep voids are packed so the mastic is the right thickness.
- The mastic is mixed, pressed into the joint by hand and shaped.
- The finish is dressed so it sits neatly against the stone or brick.
Before we arrive
- Tell us about any previous sealing or DIY attempts
- Mention any leaks or damp you’ve noticed
- Mention any parking rules near the property
Get a quote
We don’t publish a price list, because every job is different. Instead, your job gets its own clear quote. To get started, ring 0345 464 0079 or email us.
Related advice
Signs you need sand mastic in Tandridge
Decorating can disturb tired mastic. Many people find it crumbling when they prepare the windows, which is a good time to renew it.
Any of these means the joints need attention:
- Gaps where the frame meets the masonry
- Tired mastic found when preparing windows for paint
- Silicone on a period window that looks wrong
- Wind and rain getting in round a sash window
If you let a flat or house near Godstone station, cracked sand mastic around sash windows lets in the draughts tenants complain about.
Comparing quotes
- What insurance they hold
- How long the guarantee is
- What preparation is included
- Whether you can choose the colour
Looking after it afterwards
Good habits help new joints last longer. Our tips:
- Do not run silicone over sand mastic
- Go gently near the mastic when preparing windows
- Ask a joiner to look at soft timber first
- Keep sills and gutters clear so water drains away
When preparing windows for paint, take care around the mastic. Hard scraping can loosen it.
Crumbling mastic lets rain into the joint. That water can reach the timber frame and the wall so early renewal protects both.
Why deal with it now?
An open joint round the frame lets weather in. Water can get to the frame and the masonry, so dealing with it now protects both. Around Tandridge, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
We don’t show prices on the website, because the cost depends so much on the job itself. For a quick quote, please ring 0345 464 0079 or send us an email and we will talk you through it.
What you get with us
- 12-month guarantee on every job
- Full insurance on every job
- Domestic, commercial and hotel work
- Old sealant always removed completely
Read our cost guide and our reviews.
How the job changes by surface
Timber door frames
A neat sand mastic joint round a front door suits a period home.
Tenement and terrace windows
Windows above ground floor need the right access. Let us know the floor and we’ll confirm access.