Reading · England
Norcot External Mastic
Professional external mastic in and around Norcot, with every bit of old sealant taken out first and a 12-month guarantee.
- Movement joints filled with mortar instead of sealant
- Water getting into walls through failed joints
- Moss and dirt in joints with no sealant left
Do you need external mastic in Norcot?
Weeds, moss and debris in a joint are a sign the sealant has gone. Roots and dirt hold water against the wall.
Signs it’s time to call us include:
- Sealant pulling away from one side of the joint
- Leaking joints around cladding and façade panels
- Weathered mastic that no longer stretches
- Plants rooting in failed movement joints
In the older streets around Tilehurst Methodist Church, old and new materials meet at the roofline and walls, which is where sealant earns its keep.
Questions to ask before you book
- Is VAT in the price?
- What insurance they hold
- Whether the sealant suits the joint
- Whether you can choose the colour
About our external mastic in Norcot
Movement joints let brickwork, render and cladding expand and shrink without cracking. Its sealant has to flex with the building, season after season, so once it splits or hardens, the joint stops working and water gets in. If you have weathered mastic that no longer stretches and joints pointed up with cement by mistake, we can put it right, whatever the surface.
Around Norcot, garages, outbuildings and extensions all add to the joints on the outside of a home. Leaks generally start at a gutter end, a garage door frame or where an extension meets the house.
Whatever the size of the job, it’s backed by our one-year guarantee.
- Place
- Norcot (RG30, RG31)
- Wider area
- Reading
- Cover
- 12 months on all our work
- Quotes
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
What we do, step by step
Good joint work is mostly preparation, and we don’t rush it. Joints are cleaned back and dried before anything new goes in. All told, the work takes a few hours for a handful of joints, longer for a whole elevation. In a smaller place like Norcot, parking is seldom the issue; lanes, gates and long drives are worth mentioning. If the job is outside, tell us about side access and how high the joints are.
- Each joint is checked and the colour of the new sealant agreed.
- Failed sealant is removed back to clean, sound faces.
- Closed-cell backing rod is pushed in so the sealant bonds to two sides only.
- Primer is applied wherever the sealant needs it.
- We gun in low-modulus sealant and tool it neatly.
Getting ready for the visit
- Mention if the joints have been sealed before
- Mention any tricky access
- Keep children and pets away from the work area
Get a quote
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints, and email photos if that’s easy.
Advice
For landlords and businesses
Letting agents and landlords in Norcot can book us as well as householders. Resealing between tenancies is a simple way to keep a property in good order before the next move-in.
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
Why act early in Norcot
An open joint keeps letting water into the wall with every downpour. Wet masonry is more easily damaged by frost near the open joint, so the problem grows beyond the joint itself. Homes in smaller places like Norcot can face more weather, and failed outside joints let damp into walls. Inside, a split seal lets water into floors and panels just as it would anywhere.
The cost reflects the work involved, not guesswork. That’s why we ask about the job first.
Why us?
- Rated 4.9 stars on Google
- Anti-fungal silicone where joints get wet
- 20+ years of sealant experience
- Any old sealant cut out fully, not covered over
Take a look at how sealant jobs are priced or what customers say.
What affects the cost of external mastic
For a quick quote, just ask. The main things that affect it are:
- The old material and how stubborn it is
- How many areas need sealing
- Whether there’s mould to deal with
- Any working-time requirements on site
We do not show prices on the website, because each job is priced on what it involves. For a quick quote, please call 0345 464 0079 or email us.
What to tell us for a quote
What to tell us when you ask for a quote:
- The problem you’ve noticed
- If someone has resealed it before
- Where the property is
- Access, such as stairs, a lift or height
Want a quote for external mastic? Please phone 0345 464 0079 or send us an email with a few details. You will know what we plan to do, and what it will cost, before any work begins.
More services for Norcot
When something else is needed
Honest advice matters more to us than a booking, so here’s what sealant can’t fix:
- Failed render or damaged cladding panels
- Cutting new joints into brickwork, which is building work rather than sealant work
- Cracked brickwork or render that needs a builder or plasterer
Not sure which it is? You can phone 0345 464 0079 or send us an email and we will tell you honestly before you book.
What we seal
- Render & cladding joints
- Concrete & block
- Façade panels
- Joints between brick and frames
- Copings & trims
- Brickwork movement joints
External mastic in Norcot: local notes
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 Mapledurham House (about 1.8 miles north) are a reminder that the area around Norcot has older buildings as well as new. Where a home is older, older brick and stone need a sealant that suits them, at the right joint depth.
Rented homes near Tilehurst station change hands often, and outside joints that have cracked can let damp into a rental, so check them between lets. If you look after a building such as Meadow Park Academy, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
Norcot is about 2 miles west of Reading, in Reading. Anywhere in RG30, we can carry out external mastic at your property. Our Reading coverage runs to 34 places, Norcot among them.
We cover every part of RG30 and RG31 for external mastic. That includes homes and businesses on Ash Road, Tay Road and Tyle Road. If you’re just outside Norcot, we cover Tilehurst Within (1 mile south-west), Tilehurst (1 mile west), Horncastle (1 mile south), Little Heath (1 mile west) and Fords Farm (1 mile south). Larger places within reach include Caversham (3 miles north-east), Shinfield (5 miles south-east), Arborfield Garrison (8 miles south-east), Whitley Wood (4 miles south-east), Sonning Common (4 miles north-east) and Whitley (4 miles south-east). Norcot is one of the larger places we cover in Reading.
What’s near Norcot
Locally, jobs take us to homes and businesses close to The Butchers Arms, Prospect School and Round Copse and the streets around them. The closest station to Norcot is Tilehurst station, about 0.8 miles north of the centre. A little further out are Battle Hospital (1.3 miles east) and Royal Berkshire Regiment Museum (1 mile east). Not far away are South Lake and Moor Copse Nature Reserve.
Questions from Norcot
Do you work for landlords with property near Tilehurst station?
Yes, rental work is part of what we do. You can call 0345 464 0079 or email us with the address and a few details, and we’ll give you a fixed price before any work starts.
Will you come out to Norcot?
Yes, we do. We work across London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
Can you seal joints between render and window frames?
Yes. Joints between dissimilar materials are a big part of external work. The sealant is chosen to bond to both sides.
What’s an expansion joint in brickwork?
A movement joint is a planned break in the wall that absorbs expansion and shrinkage. It should be filled with flexible sealant, never mortar.
Why do you put foam in the joint first?
Closed-cell backing rod sets the depth of the sealant and stops it sticking to the back of the joint. That way it bonds to the two sides only and can stretch.
Should I try DIY first?
Sometimes. The key is preparation: remove all the old material and work on a clean, dry joint. We can always put it right if it fails.
Do you hold any approvals?
Yes. We hold ARBOMaster approved applicator status, and we are fully insured.
Can you match the colour of my brickwork?
Exterior sealants are made in a range of colours, from greys and browns to whites and stone shades. We pick the one that suits your wall best so the joint does not draw the eye.
DIY versus a professional finish
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
If you do try it yourself, take your time over the 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.