Kent · England
Whetsted Sand Mastic
Window and door surrounds in Whetsted need attention? We cut out the old, prepare the joints and apply the right sealant, with a one-year guarantee.
- Window mastic to renew ahead of painting
- Gaps between timber frames and stone or brick
- Mastic dropping out of the joint
Sand mastic in Whetsted, done properly
Sand mastic suits most period window surrounds. On modern frames we’d normally use a flexible sealant, and we will talk through which suits your home. We are often asked to deal with mastic dropping out of the joint and cracked mastic round a front door frame, across period & listed homes, sash and case windows and brick reveals.
Around Whetsted, many homes face open ground, so their windows and doors take the full weather. That exposure dries out and cracks the mastic around frames and sills faster.
The work is guaranteed for twelve months. If there’s a problem with our work within the year, let us know and we’ll sort it.
- Location
- Whetsted (TN12)
- Region
- Kent
- Cover
- One year on every job
- Quotes
- A clear price before we start
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Landlord and commercial work in Whetsted
From a single let to a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.
Honest limits
New sealant cannot fix everything, and we’ll tell you before work begins. It will not solve:
- Putty and glazing repairs
- Sash cords, weights and draught-proofing of the sashes
- Decisions on consent for listed homes
If you are not sure, just ring 0345 464 0079 or drop us an email and we’ll give you a straight answer.
What we seal
- Period & listed homes
- Timber door frames
- Brick reveals
- Tenement windows
- Stone surrounds
- Sash and case windows
Common questions in Whetsted
Can you help a landlord with a rental near Paddock Wood station?
Yes, we work for letting agents and landlords. Just ring 0345 464 0079 or send us an email and tell us about the property, and we’ll give you a clear price.
Do you cover smaller places like Whetsted?
Yes. Whetsted is within the area we cover, which takes in towns, villages and rural addresses. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Is the work guaranteed?
Every job comes with our one-year guarantee, and we’re fully insured.
Do you take out the old sealant first?
Yes, every time. New sealant will not bond properly to old, so any old material comes out before anything new goes in.
What’s sand mastic made of?
It’s sand mixed with a linseed-oil-based binder for the joint between timber frames and masonry.
Can I do it myself?
It depends on the job. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional, while a short indoor joint may be within reach.
How long will you be here?
A typical job takes a few hours for a single window, longer for several. Your quote will say how long we expect yours to take.
When will the new mastic be hard?
It takes a while. The skin forms first, and the full set comes later, and we’ll tell you what to expect.
Aftercare tips
Aftercare is simple, and it makes a real difference:
- Do not run silicone over sand mastic
- Keep sills and gutters clear so water drains away
- Avoid heavy scraping on the mastic joint
- Renew mastic before redecorating the windows
Keep gutters and sills clear so water runs away from the surround. Constant wetting wears the mastic faster.
Fine cracks show the mastic is starting to fail. It’s easier to renew it before it drops out.
Whetsted homes and the weather
London and the South East are among the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
Rented homes near Paddock Wood station change hands often, and cracked sand mastic around sash windows lets in the draughts tenants complain about. Homes close to Five Oak Green Church include some older properties, and the joint between an old wall and a newer frame is usually the first place rain gets in.
Whetsted is about 4 miles east of Tonbridge, in Kent. Wherever you are in the TN12 postcode area, our applicators can take on sand mastic. Whetsted is one of 922 towns and villages in Kent where we work. We also work in Crawley, about 25 miles from Whetsted.
Every address in TN12 is covered for sand mastic. Neighbouring places we cover for sand mastic include Five Oak Green (1 mile south-west), Paddock Wood (1 mile south-east), Colt's Hill (1 mile south-west), Capel (2 miles south-west) and Crockhurst Street (2 miles west). Larger places within reach include Maidstone (8 miles north-east), Sevenoaks (10 miles north-west), Royal Tunbridge Wells (6 miles south-west), Tonbridge (4 miles west), Kings Hill (6 miles north) and Foley Park (9 miles north-east).
Local landmarks in Whetsted
Typical jobs here are in homes near The Kings Head pub, Mascalls School and Foal Hurst Wood. For rail, the closest station is Paddock Wood station, about 0.9 miles south-east of the centre. A little further out are Tonbridge Castle (4.4 miles west) and Tunbridge Wells Hospital (4.1 miles south-west). For a walk, there’s Tudeley Woods RSPB reserve.
Should I try it myself first?
The biggest DIY mistake is sealing over old sealant. New silicone will not bond to old, so it peels away and traps moisture behind it. All the old material has to come out first.
A DIY attempt doesn’t rule out a professional job. We remove it and do the joint properly, so just mention it when you contact us.
Nearby places to Whetsted
More services for Whetsted
Common problems we fix in Whetsted
Most of it is simply age. Sand mastic is a maintenance item like any pointing and how long it lasts depends on the weather it faces.
The most common problems we see are:
- Mastic round period door frames that has failed
- Mastic worn away on windows facing the weather
- Silicone on a period window that looks wrong
- Patchy fillers round a sash window
For site and facilities teams at buildings such as Paddock Wood Primary School, larger buildings have plenty of frames, and the mastic around each one ages.
Comparing quotes
- What the quote includes, VAT included or not
- How long to leave it before use
- What product goes in the joint
- Whether you can choose the colour
What we do, step by step
We keep the work tidy and contained to the joints we are treating. Expect the work to take a few hours per window, depending on the condition of the joints, and we explain the cure time before we leave. In a small place like Whetsted, access is usually the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We start by checking each surround and agreeing the joints to renew.
- 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.
- 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.
Before we arrive
- Move anything stored near the joints
- Mention any tricky access
- Keep pets and children clear of the area while we work
Ask for a quote
For sand mastic in Whetsted, phone 0345 464 0079 or drop us an email. Tell us what the problem is and where, and we will agree the price before any work begins.
Read more
What happens if it’s left?
Not every draught comes from the sashes themselves. Open mastic joints round the box can let air in, and renewing the mastic closes them. Older cottages and farmhouses around Whetsted can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
Rather than a set price list, we look at what your job involves: the amount of work, the old material and the access. You will know the price before we begin.
Why us?
- ARBOMaster approved applicator
- More than 20 years in sealant work
- 180+ five-star Google reviews
- Domestic, commercial and hotel work
Take a look at what affects the cost or our reviews.