Slough · England
External & façade joints in Fulmer, Slough
Sealing brickwork movement joints, render, cladding and façade joints for homes and businesses in Fulmer and across Slough. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Sealant pulling away from one side of the joint
- Panel joints letting water in
- Brick movement joints where the sealant has split
What happens on the day
We keep the work tidy and contained to the joints we are treating. Expect the work to take a few hours to a few days, depending on the length of joint and the access, and we tell you how long to leave it before we go. Somewhere as small as Fulmer, access is often the only tricky part. 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’ll reach them.
- Old sealant and any debris are cut and raked out.
- We clean both faces of the joint and prime them where the product calls for it.
- Backing rod goes in next, setting the depth and keeping the sealant off the back of the joint.
- We gun in a flexible exterior sealant in a colour that suits the wall and tool it neatly.
Preparing for the visit
- Plan for the work area to be out of bounds to pets and children
- For indoor joints, keep the area dry beforehand if you can
- Let us know about earlier repairs to the joints
Get a quote
It all starts with a short chat. Describe the problem, the location and the size of the job. When it suits you, call 0345 464 0079 or email us.
Advice
How we handle external mastic in Fulmer
Where two different materials meet, such as brick and render or blockwork and metal, they move at different rates. A flexible exterior sealant takes up that movement where a rigid filler would soon crack. Typical jobs include joints with sealant missing in places and rain getting behind render or cladding at a joint, across brickwork movement joints, joints between brick and frames and façade panels.
Outside joints can only be sealed when they’re dry, so work in Fulmer is booked around the forecast. Let us know about access to every wall, plus any garages or outbuildings.
All our work is covered by our 12-month guarantee, wherever you are in Slough.
- Location
- Fulmer (SL3)
- Region
- Slough
- Cover
- 12 months on all our work
- Price
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
What external mastic looks like in Fulmer
Rainfall in the South East is lower than in much of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Managing a site like Fulmer Infant School? Then its movement joints, gutters and trims need looking after like any other building’s. Letting a property close to Gerrards Cross station? Then outside joints that have cracked can let damp into a rental, so check them between lets.
Fulmer is about 4 miles north-east of Slough, in Slough. If you need external mastic in Fulmer, please call 0345 464 0079 or email us for a quick quote. We cover Slough from our Crawley base, Fulmer included. Fulmer is one of 31 towns and villages in Slough we cover for external mastic. For nearby work, see our London page (20 miles or so).
Postcode districts we cover here for external mastic: SL3. External mastic is available to properties on Fulmer Road, Alderbourne Lane and Hay Lane and the roads around them. Nearby, we also carry out external mastic in Tatling End (1 mile north-east), Wexham Street (1 mile south-west), Gerrards Cross (1 mile north), Stoke Poges (2 miles south-west) and Rush Green (2 miles east). We also work in nearby towns such as Slough (4 miles south-west), Cippenham (5 miles south-west), Chalvey (4 miles south-west), Britwell (3 miles south-west), Langley (4 miles south) and Upton (4 miles south).
What’s near Fulmer
Typical jobs here are in homes near Bulstrode Park, The Black Horse Public House and Khalsa Secondary Academy and the streets around them. The closest station to Fulmer is Gerrards Cross station, about 1.9 miles north of the centre. Other landmarks nearby include British Airways Heritage Collection (3.5 miles south-east) and Wexham Park Hospital (2.2 miles south). For a walk, there’s Horse Shoe Bay and Stoke Common.
Aftercare tips
Good habits help new joints last longer. A few tips:
- Get split or bare joints resealed while the damage is small
- Leave the joints unpainted unless we’ve said otherwise
- Show decorators and builders where the movement joints are
- Check external joints each spring
Do not let soil, plants or ivy build up against the new joints. Anything that holds water against the joint wears it out sooner.
Leaks behind façade panels and render often go unseen. When it finally shows inside, the joint may have been open for years.
Honest limits
Before you book, it’s worth knowing the limits:
- Failed render or damaged cladding panels
- Walls that need new movement joints cut into them
- Cracking across the wall rather than at a joint
If you’re not sure, just ring 0345 464 0079 or send us an email and we will give you a straight answer before booking.
Joints and surfaces we work on
- Joints between brick and frames
- Copings & trims
- Brickwork movement joints
- Render & cladding joints
- Concrete & block
- Façade panels
DIY versus a professional finish
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it fails, we can still redo it.
If you’ve already had a go yourself, that’s fine. We cut it out and start again, so just mention it when you contact us.
Signs you need external mastic in Fulmer
Many joints fail because they were sealed too deep or with nothing behind them. Sealant bonded to three sides has nowhere to go and tears as soon as the joint widens.
It’s worth asking for a quote if you see:
- Joints where the bead has come unstuck
- Leaking joints around cladding and façade panels
- Weeds or debris growing in open joints
- Rigid filler in a joint that should flex
In the older streets around Church of St James, the joints between older walls, newer extensions and the roofline need a sealant that can move.
What to look for in a quote
- What the cure time is
- Is the old sealant removed completely?
- Whether VAT is included
- How the colour is chosen
Nearby places to Fulmer
What else we do in Fulmer
Surface by surface
Copings and trims
Metal and stone copings both move with temperature, so the joints need a sealant that stays flexible year round.
Concrete and blockwork
Blockwork and concrete shrink over time and move with the seasons. We reseal their joints with backing rod and a flexible product.
Why deal with it now?
The longer a joint stays open, the more water the wall takes in. Wet masonry is more easily damaged by frost around the joint, so the problem grows beyond the joint itself. Where a wall is exposed, as many are in small places like Fulmer, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
Leaving a failed joint normally makes the job bigger, not smaller, as water and mould keep getting in. If you are unsure, call 0345 464 0079 or email us and we will give you an honest view and a quote.
Why Fulmer clients choose us
- An ARBOMaster approved applicator
- 180+ five-star Google reviews
- Old sealant always removed completely
- Experience in homes, commercial sites and hotels
Take a look at what affects the cost and what customers say.
Common questions in Fulmer
Is Fulmer in your area for external mastic?
Yes. We work across London and the South East, and Fulmer is part of that. Just call 0345 464 0079 or drop us an email with a few details of the job, and we’ll send you a clear quote.
I let a flat near Gerrards Cross station. Can you help?
Yes. We work for landlords and agents as well as homeowners. You can ring 0345 464 0079 or email us with the details for a clear quote.
How long should I leave it?
Cure times vary by product. Before we leave, we will tell you the cure time.
Are you insured?
Yes. We are fully insured, with over 20 years’ experience in sealant work.
Should I point up the gap in my brickwork?
No. A mortar-filled joint can’t move, so the wall cracks somewhere else instead. Use a flexible sealant with backing rod.
Do you take out the old sealant first?
Always. Sealing over old sealant is the main reason resealing fails early, so we never do it.
Do you seal joints where cladding meets other materials?
Yes. Joints between dissimilar materials are a big part of external work. We use a flexible sealant suited to both surfaces.
Will it make a mess?
No. We work neatly, protect the area around the joints and tidy up afterwards.