West Berkshire · England
External Mastic in Bagnor
External mastic for Bagnor and the surrounding area: careful preparation, the right product and tidy work. Call for a quick quote.
- Joints where the bead has come unstuck
- Hard, crazed mastic that has stopped moving
- Movement joints filled with mortar instead of sealant
External mastic in Bagnor, done properly
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 use one wherever it does. If you’re dealing with sealant pulling away from one side of the joint and moss and dirt in joints with no sealant left, we can put it right.
Around Bagnor, older buildings can be stone, brick or timber-framed, many with extensions added later. Where one material meets another is where water normally gets in, and they need the right sealant at the right depth.
Each job carries a 12-month guarantee, whatever its size.
- Place
- Bagnor (RG14, RG20)
- Region
- West Berkshire
- Guarantee
- One year on every job
- Price
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Honest limits
New sealant can’t fix everything, and we’d rather say so up front. Sealant will not put right:
- Cutting new joints into brickwork, which is building work rather than sealant work
- Cracking across the wall rather than at a joint
- Subsidence or other structural problems
If in doubt, call 0345 464 0079 or drop us an email and we will say what we think.
Where we work in Bagnor
- Brickwork movement joints
- Joints between brick and frames
- Copings & trims
- Concrete & block
- Render & cladding joints
- Façade panels
How it works
Our applicators work methodically: protect, prepare, seal, tidy. For most jobs that takes a few hours to a few days, depending on the length of joint and the access. In a small place like Bagnor, access is normally the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We look at every joint and agree a colour to suit the wall.
- We take out the old sealant until the faces are sound.
- Closed-cell backing rod is pushed in so the sealant bonds to two sides only.
- We prime the faces where required.
- We gun in low-modulus sealant and tool it neatly.
How to prepare
- Let us know about earlier repairs to the joints
- Let us know about stairs, lifts or work at height
- Mention any parking rules near the property
How to get a quote
If you’re in Bagnor and need external mastic, phone 0345 464 0079 or send us an email. Tell us what the problem is and where, and we will agree the price before any work begins.
Related advice
FAQs for Bagnor
Is Bagnor within the area you cover?
Yes, Bagnor is covered. 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 Bagnor?
Yes, Bagnor is within the area we cover. We work across London and the South East. You can phone 0345 464 0079 or send us an email and tell us what needs doing, and we will give you a clear quote.
Do you remove the old sealant?
Yes. We cut out all the old sealant and clean the joint before resealing.
Are you ARBOMaster approved?
Yes. Mr Mastic is an ARBOMaster approved applicator and we are fully insured too.
Will there be a smell?
Some sealants have a smell while they cure. Ventilation helps.
Can tenants book the work?
We can work for tenants, landlords or agents. Get your landlord’s agreement first.
When is the sealant fully cured?
Cure times vary by product. We tell you how long to leave it before we go.
Can a movement joint be filled with mortar?
No. A mortar-filled joint can’t move, so the movement cracks the wall elsewhere. It needs a flexible sealant over backing rod.
What external mastic looks like in Bagnor
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 Benham Park (about 0.8 miles west) are a reminder that the area around Bagnor has older buildings as well as new. In older buildings, older brick and stone need a sealant that suits them, at the right joint depth.
If you live in an older home near Parish Church of St Mary, the joints between older walls, newer extensions and the roofline need a sealant that can move. For landlords with property near Newbury station, failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Bagnor is about 1 mile north-west of Newbury, in West Berkshire. Jobs in Bagnor get the same care as everywhere else we work: old sealant removed completely, careful preparation and a one-year guarantee. Our area takes in 155 places across West Berkshire, from the larger towns to small villages. Reading is on our list too, around 16 miles away.
Postcode districts we cover here for external mastic: RG14 and RG20. Streets in the area include Bath Road, Pound Lane and Speen Lane. We also cover the places around Bagnor: Speen (1 mile south), Donnington (1 mile north-east), Speenhamland (1 mile east), Stockcross (1 mile west) and Marsh Benham (2 miles west). Within a short drive, we also cover Thatcham (4 miles east), Burghfield Common (12 miles east), Hungerford (7 miles west), Calcot (13 miles east), Lambourn (10 miles north-west) and Burghfield Hill (13 miles east).
Near you in Bagnor
Around Bagnor, our work takes us to homes and buildings near Trinity School, Victoria Park and The Starting Gate pub, among other places. For rail, the closest station is Newbury station, roughly 1.5 miles south-east of the centre. Other landmarks nearby include Donnington Castle (0.8 miles north-east) and British Balloon Museum & Library Ltd (1.3 miles south-east). Not far away are Rack Marsh.
When to call us in Bagnor
If plants are growing out of a joint, the sealant has normally failed or was never there. Dirt and roots then trap moisture in the joint and make things worse.
Common reasons people contact us include:
- Rigid filler in a joint that should flex
- Rain getting behind render or cladding at a joint
- Brick movement joints where the sealant has split
- Gaps where render, brick and frames meet
Schools such as Robert Sandilands Primary School and Nursery are buildings too, and larger buildings have long runs of movement joint that eventually need resealing.
Comparing quotes
- Whether all the old sealant comes out first
- Which colour the sealant will be
- How long to leave it before use
- Who does the work, and how experienced they are
What affects the quote in Bagnor
Call for a quick quote. The main things that affect it are:
- How many rooms, windows or areas are involved
- How easy the joints are to reach
- Any mould that needs treating
- How much old sealant there is and how hard it is to remove
The cost reflects the work involved, not a rough estimate. That’s why we ask about the job first.
Helping us quote
What to tell us when you ask for a quote:
- If someone has resealed it before
- The address or postcode of the job
- How many joints, rooms or windows are involved
- Pictures of the joints, sent by email
Every job is quoted individually, so start by telling us what you need. Just ring 0345 464 0079 or send us an email with the details, and pictures are welcome.
Places near Bagnor
Other services in Bagnor
Surface by surface
Cladding and façade panels
If the façade has a specified sealant, that’s what we use or an approved alternative. Tell us what the building has when you get in touch.
Brickwork movement joints
People sometimes point up a brick movement joint by mistake. Where one has been mortared, we cut it out and reseal it with sealant where it can be done safely.
DIY sealant or a professional job?
Sealing over old silicone is the commonest DIY error. Silicone does not stick to old silicone, so it lifts and traps water and mould underneath. Everything old must be removed first.
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
Keeping the joints in good condition
Good habits help new joints last longer. Our tips:
- Check external joints each spring
- Clear growth from the base of walls and joints
- Act on the first splits you see
- Show decorators and builders where the movement joints are
Keep the joints clear of soil, plants and climbing growth. Anything that holds water against the joint wears it out sooner.
Small splits are the time to act. Then it’s a straightforward cut-out and reseal with no damage behind it to deal with.