Oxfordshire · England
External Mastic in Kingston Blount
Our applicators work in Kingston Blount on sealing brickwork movement joints, render, cladding and façade joints. Old material cut out, joints cleaned and sealed neatly and every job guaranteed for a year.
- Hard, crazed mastic that has stopped moving
- Sealant that has lost its bond to the brick or render
- Failed sealant between panels on a façade
How we handle external mastic in Kingston Blount
We’re ARBOMaster approved applicators, and each external joint gets a sealant suited to it. Porous or awkward surfaces are primed where the sealant needs it, and we do not skip that step. If you are dealing with rigid filler in a joint that should flex and panel joints letting water in, we can help.
In a village or hamlet like Kingston Blount, older cottages and farm buildings often stand in the open, where walls and rooflines take the weather head on. Joints on those walls need a sealant that moves with the building and stays in place.
We stand behind the work with a one-year guarantee, so you’re not left on your own once the job is done.
- Location
- Kingston Blount (OX39)
- Wider area
- Oxfordshire
- Guarantee
- A year, on every job
- Price
- A clear price before work begins
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
How it works
Most of a good job is in the preparation, so that’s where we spend the time. Every joint is cleaned and dried before new material goes in. All told, the work takes anything from a few hours to several days, depending on the building. In a small place like Kingston Blount, access is generally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- We start by checking each joint, agreeing the ones to redo and how we will reach them.
- We cut out the failed sealant and rake out any dirt or growth.
- The joint faces are cleaned and primed where the sealant needs it.
- Backing rod goes in next, setting the depth and keeping the sealant off the back of the joint.
- A flexible exterior sealant is applied and tooled in a colour to suit the wall.
Before we arrive
- For business premises, tell us about site rules or sign-in
- Move anything stored near the joints
- Mention if the joints have been sealed before
Getting a quote
Quotes start with a quick conversation. Describe the problem, the location and the size of the job, and we’ll talk you through what we’d do. When it suits you, call 0345 464 0079 or send us an email.
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Walls and rooflines in Kingston Blount
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. With historic houses such as Adwell House (about 2.6 miles west) nearby, there’s older building stock in the area around Kingston Blount as well as newer homes. In older buildings, older walls and rooflines need a sealant that moves with them and suits the material.
For an older house near a landmark such as Church of the Nativity of the Blessed Virgin Mary, older walls, gutters and the joints where extensions meet them need a flexible sealant. Letting a property close to Princes Risborough station? Then failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Kingston Blount is about 4 miles south-east of Thame, in Oxfordshire. If you need external mastic in Kingston Blount, it’s easy to get a quote: please ring 0345 464 0079 or send us an email. We cover Oxfordshire from our Crawley base, Kingston Blount included. Kingston Blount is one of 443 places in Oxfordshire where we work. We also work in Oxford, around 13 miles away.
Jobs for external mastic in OX39 is quoted and booked the same way as anywhere else. Local streets include High Street, Pleck Lane and Old Croft Close, and we cover them all. We also cover the places around Kingston Blount: Crowell (1 mile east), Oakley (1 mile north-east), Aston Rowant (1 mile south-west), Crowell Hill (1 mile south-east) and Postcombe (2 miles west). Larger places within reach include Oxford (13 miles west), Didcot (15 miles west), Abingdon-on-Thames (15 miles west), Thame (4 miles north-west), Henley-on-Thames (11 miles south) and Benson (9 miles south-west).
Near you in Kingston Blount
Typical jobs here are in homes near The Cherry Tree pub and the streets around them. Kingston Blount’s nearest station is Princes Risborough station, roughly 4.2 miles north-east. Other landmarks nearby include Thame Community Hospital (4.1 miles north-west). Not far away are Bald Hill and Oakley Hill nature reserve.
What the job involves on each surface
Render joints
Render has movement joints and stop beads that need sealing. We reseal them with a flexible exterior sealant that suits the render colour.
Joints between dissimilar materials
Wherever two materials meet, they move differently. We seal the joint with a flexible exterior sealant.
Should I try it myself first?
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
If you’ve already had a go yourself, that’s fine. We remove it and do the joint properly, so tell us about it when you ask for a quote.
Nearby places to Kingston Blount
Also in Kingston Blount
Questions from Kingston Blount
Is Kingston Blount within the area you cover?
Yes, we do. We work across London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Do you cover Kingston Blount for external mastic?
Yes. Our work covers London and the South East, and Kingston Blount is part of that. You can call 0345 464 0079 or send us an email and tell us what needs doing.
What do you put in the joint?
We choose the sealant for the joint, not the other way round. Movement, water and weather all affect the choice.
Can you do several jobs on one visit?
Of course. Doing several areas at once is generally more efficient, so mention them when you ask for a quote.
I rent my home. Can I book you?
Yes, though it’s best to check with your landlord first. Landlords are often happy for the work to be arranged.
Can you seal joints between render and window frames?
Yes. We cut out the old sealant, prepare both faces and reseal with a flexible exterior product. We pick a colour that works with both materials.
Is there any odour?
There can be a smell while the sealant cures, which fades as it sets. Ventilation helps.
What is backing rod for?
Backing rod controls the sealant depth and keeps it off the back of the joint. Then the sealant bonds to two faces and can move.
Common problems we fix in Kingston Blount
Joints sealed without backing rod, or far too deep, rarely last. Sealant bonded to three sides has nowhere to go and rips as the joint opens.
Common reasons people contact us are:
- Plants rooting in failed movement joints
- Panel joints letting water in
- Joints with sealant missing in places
- Water getting into walls through failed joints
For site and facilities teams at buildings such as Aston Rowant Church of England Primary School, larger buildings have long runs of movement joint that eventually need resealing.
Questions to ask before booking
- Which sealant they’ll use, and why
- How hidden problems are handled
- How the joint is cleaned and prepared
- How long to leave it before use
Keeping the joints in good condition
Once the sealant has cured, a few habits help it last:
- Wash walls gently around the sealant
- Keep movement joints as flexible joints, not mortar
- Keep soil, plants and ivy away from the joints
- Point out the joints to other trades
Look over the joints once a year, ideally after winter. Splits, gaps at the edges or plants in the joint are early warning signs.
Water getting behind cladding or render can go unnoticed for a long time. When it finally shows inside, the joint may have been open for years so early resealing is worth it.
Work for landlords, hotels and businesses
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
Landlords and letting agents in Kingston Blount can book us as well as homeowners. Resealing between tenancies is a simple way to keep a property in good order.
When it is not the sealant
We’ll always be straight with you, so here’s what new sealant will not do:
- Loose or hollow render, which needs re-rendering
- Adding movement joints to masonry that has none
- Subsidence or other structural problems
Not sure which it is? You can call 0345 464 0079 or email us and we’ll tell you honestly before booking.
Surfaces we seal
- Concrete & block
- Render & cladding joints
- Joints between brick and frames
- Brickwork movement joints
- Copings & trims
- Façade panels