Kent · England
Riverhead Window Mastic
Specialist window mastic for Riverhead: the right sealant, proper preparation and a neat finish. Call for a quick quote.
- Mastic that is falling out in pieces
- Cracked or shrunken mastic around the frame
- Cracked internal joints between frame and plaster
About our window mastic in Riverhead
Every window and door frame has a gap around it, and mastic is what closes it. When it cracks, hardens or pulls away, draughts and rain get in. The old mastic is removed and the joint resealed with a flexible exterior sealant. If you have untidy mastic left by window fitters and a bead that doesn’t match the frame, we can help, on composite doors, timber windows & doors and patio & French doors alike.
Homes around Riverhead range from older properties to newer houses, and their windows range just as widely. Each frame material needs the right sealant against the right wall.
Every job comes with our 12-month guarantee.
- Location
- Riverhead (TN13, TN14)
- Region
- Kent
- Cover
- 12 months on all our work
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Frames and glazing around Riverhead
Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. With historic houses such as Knole House (about 2 miles south-east) nearby, there’s older building stock in the area around Riverhead 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.
For landlords with property near Sevenoaks station, cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets. Homes close to Church of St Mary include some older properties, and frames set in older brick or stone need a sealant that suits the wall as well as the frame. For site and facilities teams at buildings such as Amherst School, larger buildings have plenty of frames, and the mastic around each one ages.
Riverhead is about 1 mile west of Sevenoaks, in Kent. Homes, rented property, offices and hotels in Riverhead is covered for window mastic. The work is guaranteed for a year. We cover 922 towns and villages across Kent, large and small. Our London page covers work nearby (19 miles or so).
Our applicators cover all of TN13 and TN14 for window mastic. Local streets include London Road, Hamlin Road and Witches Lane. We also cover the places around Riverhead: Dunton Green (1 mile north), Bessels Green (1 mile south-west), Sevenoaks (1 mile east), Chipstead (1 mile west) and Kippington (1 mile south). We also work in nearby towns such as Maidstone (15 miles east), Dartford (11 miles north), Royal Tunbridge Wells (11 miles south), Gravesend (14 miles north-east), Tonbridge (8 miles south-east) and Northfleet (13 miles north-east).
Landmarks near Riverhead
Around Riverhead, our work takes us to homes and buildings near The Beehive Public House, Trinity School and Montreal Park, among other places. The closest station to Riverhead is Sevenoaks station, roughly 0.8 miles south-east. Nearby you will also find Kemsing Castle Bank (3 miles north-east) and Sevenoaks Museum (1.4 miles south-east). The countryside around Riverhead includes Dryhill Nature Reserve and Betsom's Hill.
Nearby places to Riverhead
What else we do in Riverhead
Why deal with it now?
Draughts and leaks do not always mean new windows. If the frames and glass are in good order, resealing the joints is often all that is needed. If we find failed glass units or worn seals, we will tell you. Around Riverhead, water from a failed joint in an older home can soak 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 will know the price before we begin.
Why us?
- Experience in homes, commercial sites and hotels
- We never seal over old sealant
- Approved under the ARBOMaster scheme
- You choose the colour before work begins
Take a look at our cost guide and customer reviews.
The process
We work through the job in order: protection first, then preparation, sealing and a tidy-up. Typically it takes most of a day for a typical house, less for a few frames, and the area is left clean. In a smaller place like Riverhead, parking is seldom the issue; lanes, gates and long drives are worth mentioning. For outside work, side access and the height of the joints help us plan.
- We check each frame and agree which ones need doing.
- Next the failed sealant is cut away and the joint cleaned.
- Where gaps are deep, backing rod goes in first.
- We apply a weatherproof sealant to match the frame and tool it neatly.
- We clear up and check every joint is fully closed.
How to prepare
- Mention any parking rules near the property
- Mention any sign-in or site rules at work premises
- Keep pets and children clear of the area while we work
Getting a quote
For a quick quote, get us on the phone, or send an email if you’d rather. Describe what needs sealing and we will explain what’s involved and give you a clear price.
Related advice
Landlord and commercial work in Riverhead
Housing providers, facilities teams and property managers book us too. We can quote a run of properties together, and we are fully insured for the work.
Hotels need rooms back in use, so the work can be planned room by room around your bookings where we can. We’ve worked in hotels as well as homes and businesses.
Questions from Riverhead
Do you work for landlords with property near Sevenoaks station?
Yes. We work for letting agents and landlords as well as homeowners, and several properties can go on one quote. You can phone 0345 464 0079 or email us with the details for a clear quote.
Do you cover Riverhead for window mastic?
Yes. We work across London and the South East, and Riverhead is part of that. You can ring 0345 464 0079 or email us and tell us what needs doing, and we will send you a clear quote.
Do you have sealant for grey or black windows?
Usually, yes. Mention the frame colour when you ask for a quote and we will match it as closely as we can.
Where do you work from?
We work from Crawley. Our applicators cover Riverhead, along with the rest of our area.
Can you work on commercial sites?
Yes. Hotels, offices and other businesses use us.
How long does it take to reseal the windows on a house?
It depends on access, the old mastic and the size of the frames. We’ll tell you how long your job needs when we quote.
How long should I leave it?
Cure times vary by product and the conditions. Before we leave, we’ll tell you the cure time.
What should I tell you?
Tell us what needs doing and where, with pictures by email if possible. We will ask anything else we need to know.
Looking after it afterwards
So the new joints stay in good condition:
- Wash the frames with mild soapy water
- Paint up to the joint, not over it
- Ventilate rooms so frames do not stay wet inside
- Walk round the house once a year and look at the joints
Check the drainage slots in the frames are not blocked, so water can run away instead of sitting against the joint.
Wet, windy weather is when failed mastic shows itself, but sealant goes on best when frames and walls are dry. Sorting cracked mastic early means the joint is sound before the bad weather.
Should I try it myself first?
If you’re set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.
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.
What sealant work cannot fix
To be straight with you, some problems need a different trade:
- Worn gaskets, brush seals or a door that has dropped
- A sash or casement that won’t close properly
- Rotten timber, which needs a joiner first
If you are not sure, just ring 0345 464 0079 or send us an email and we’ll give you a straight answer.
What we seal
- Aluminium frames
- Patio & French doors
- uPVC windows
- Window sills
- Timber windows & doors
- Composite doors
What affects the cost of window mastic
The quote reflects the job in front of us. We take into account:
- The size of the job
- The product the joint needs
- How easy the joints are to reach
- How many areas need sealing
Homes and businesses are quoted the same way: how much there is to do, how we reach it and what it needs, plus any working-time requirements on site. Call for a quick quote and we will explain what it covers.
What to tell us for a quote
A few details help us give you an accurate quote. When you ask for a quote, tell us:
- Pictures of the joints, sent by email
- The address or postcode of the job
- The rough size of the job
- Whether it has been sealed before
We do not publish a price list, because every job is different. Instead, your job gets its own clear quote. To get started, call 0345 464 0079 or email us.