West Berkshire · England
Silchester External Mastic
External mastic in Silchester from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Movement joints filled with mortar instead of sealant
- Brick movement joints where the sealant has split
- Sealant that has lost its bond to the brick or render
External mastic in Silchester, done properly
Many failed façade joints only get noticed once there’s a stain or a damp patch inside. We inspect them, agree which need doing and reseal with a weatherproof, flexible sealant in a matching colour. We work on joints between brick and frames, brickwork movement joints and concrete & block, and the jobs we see most are weeds or debris growing in open joints and failed seals between different materials.
Somewhere as small as Silchester, homes and farm buildings often face open ground, where walls and rooflines take the weather head on. Gutter joints and wall joints there need a sealant that can flex and stay put.
The work is covered for a year after we finish. If there’s a problem with it, please call 0345 464 0079 or drop us an email.
- Location
- Silchester (RG7)
- Wider area
- West Berkshire
- Guarantee
- One year on every job
- Quotes
- A clear quote up front
- Call
- 0345 464 0079
- Updated
- 26 October 2026
How we quote for external mastic
Your quote is based on your job. We take into account:
- Whether the work is at height
- Whether there’s mould to deal with
- Any working-time requirements on site
- How many rooms, windows or areas are involved
Some things make a job bigger or smaller: how much old sealant there is and how stubborn it is, whether mould needs treating, and whether we need extra access for height. Your quote takes all of that into account.
Helping us quote
You do not need to know the technical terms. It helps if you can tell us:
- The rough size of the job
- Access, such as stairs, a lift or height
- The type of property
- Whether it has been sealed before
For external mastic in Silchester, ring 0345 464 0079 or email us. Tell us what the problem is and where, and you will get a clear quote before we start.
Walls and rooflines in Silchester
With historic houses such as The Vyne (about 3.3 miles south) nearby, there’s older building stock in the area around Silchester as well as newer homes. Where a home is older, older brick and stone need a sealant that suits them, at the right joint depth. Rainfall in the South East is lower than in much of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
Schools such as Silchester Church of England Primary School are buildings too, and movement joints, cladding joints and gutters on larger buildings need the same care as a house’s. Rented homes near Bramley (Hants) station change hands often, and split movement joints are easy to miss on a rental until damp shows inside.
Silchester is about 2 miles east of Tadley, in West Berkshire. Jobs in Silchester get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. We cover 155 towns and villages across West Berkshire, from the larger towns to small villages. There’s also a page for Reading, roughly 8 miles from Silchester.
All of RG7 is covered for external mastic. If you need external mastic at a property on Little London Road, Romans Field and Dukes Ride or a nearby road, our applicators can take on the job. Close by, we work in Pamber Heath (1 mile north-west), Aldermaston Soke (1 mile north-west), Old Warren (2 miles north-west), Little London (2 miles south) and Pamber Green (2 miles south-west). Within a short drive, we also cover Newbury (10 miles west), Thatcham (8 miles north-west), Burghfield Common (4 miles north-east), Speenhamland (10 miles west), Spencers Wood (6 miles north-east) and Calcot (6 miles north).
Near you in Silchester
Typical jobs here are in homes near Padworth Common Local Nature Reserve and the streets around them. The nearest railway station is Bramley (Hants) station, about 2.4 miles south-east. Well-known places in the area include Basingstoke and North Hampshire Hospital (5.1 miles south) and Calleva Museum (under half a mile north-east). The countryside around Silchester includes Hosehill Lake.
Looking after it afterwards
So the new joints stay in good condition:
- Keep soil, plants and ivy away from the joints
- Look over the joints every year, ideally after winter
- Act on the first splits you see
- Fix overflowing gutters above sealed joints
Avoid pressure-washing straight into the joints. High-pressure water can lift the edges.
If you can see gaps, plants or bare sections in a joint, have it checked. Earlier resealing means a smaller job and a better result.
Do you need external mastic in Silchester?
Joints sealed without backing rod, or far too deep, rarely last. Sealant bonded to three sides has nowhere to go and tears as soon as the joint widens.
If you can see any of these, it’s time to have the joints looked at:
- Rain getting behind render or cladding at a joint
- Old sealant gone brittle and cracked
- Failed seals between different materials
- Panel joints letting water in
In the older streets around Saint Luke's Church, the joints between older walls, newer extensions and the roofline need a sealant that can move.
What your quote should include
- When the joint can take water or movement
- Whether VAT is included
- How the colour is chosen
- Is the old sealant removed completely?
What happens if it’s left?
Running new sealant over the old bead rarely lasts. The new layer can’t bond properly to old, weathered material, so the old joint is cut out fully first. Around Silchester, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
What you pay reflects the work, not a rough estimate. That’s why we ask a few questions first.
Why choose Mr Mastic in Silchester
- You choose the colour before work begins
- 4.9 on Google from 180+ five-star reviews
- Sanitary silicone with an anti-fungal additive in wet areas
- Neat joints and a tidy finish
Read what affects the cost and customer reviews.
Can I do it myself?
If you are 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 does not work out, we can still put it right.
If you’ve already had a go yourself, that is fine. We cut it out and start again, so just mention it when you contact us.
Questions from Silchester
Is Silchester within the area you cover?
Yes, we do. Our work covers London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Can you do external mastic in Silchester?
Yes, Silchester is within the area we cover. We work across London and the South East. Just phone 0345 464 0079 or drop us an email with a few details of the job, and we will send you a clear quote.
Can new sealant go over the old?
No, it will not last. It can look neat for a few weeks, but the new layer lifts away from the old one. The old sealant has to come out completely.
Do you do commercial work?
Yes. We have worked for hotels, offices and other businesses.
Can you reach joints on upper floors?
Each building is different. Tell us the height, the number of joints and what’s below them, and we will confirm what access is needed.
Why is there a gap in my brick wall?
Most straight vertical gaps in brickwork are movement joints. It gives the wall room to move.
How long does the job take?
Most jobs take anything from a few hours to several days, depending on the building, including preparation and clearing up. We’ll confirm how long when we quote.
Which products do you use?
Products from Arbo and Everbuild, among others, picked for each joint. We’ll tell you what we are using and why.
Towns and villages near Silchester
More services for Silchester
How it works
Good joint work is mostly preparation, and we do not rush it. Joints are cleaned back and dried before anything new goes in. In total, it generally takes a few hours for a handful of joints, longer for a whole elevation. In a small place like Silchester, access is normally the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We inspect the joints and agree which need resealing and how they’ll be reached.
- Old sealant and any debris are cut and raked out.
- Both sides are cleaned back to sound material and primed if needed.
- We push in closed-cell backing rod so the sealant is the right depth and bonds to the sides only.
- We gun in a flexible exterior sealant in a colour that suits the wall and tool it neatly.
Before we arrive
- Let us know about earlier repairs to the joints
- Mention any leaks or damp you’ve noticed
- For indoor joints, keep the area dry beforehand if you can
Get a quote
Quotes start with a quick conversation. Describe the problem, the location and the size of the job. Whenever you are ready, ring 0345 464 0079 or drop us an email.
Advice
Surface by surface
Brickwork movement joints
Brick moves with heat and moisture, and grows a little over time. The movement joint takes that up, so the sealant in it must stay soft and stretchy.
Joints between dissimilar materials
Joints where frames, sills or panels meet the wall are common leak points. We cut out the old sealant and reseal with a product suited to both surfaces.