Sonning mastic sealing
Mastic sealing for building owners, managing agents and housing associations throughout Sonning and nearby, carried out by CSCS-carded applicators. Fully insured and CHAS accredited.
- Cracked, hardened mastic round windows on a block
- Open joints in brickwork or panels
- Patchy repairs in mismatched sealant
Mastic sealing for Sonning sites
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
What sets the cost
Sealant work doesn’t have a standard rate, since sites vary so much. What we take into account:
- Location, for remote and island sites
- The size and state of each joint
- Any access equipment needed
- Removal of failed or old sealant
Every site prices differently: joint size, product, access and site hours all play a part. Send the details and a fixed figure follows.
What to include in your enquiry
The more we know, the firmer the quote. Helpful details to send:
- Rough lengths or quantities, or drawings if you have them
- The product your specification calls for
- Your programme or deadline
- Anything awkward about access or site hours
Quotes are fixed against the scope you send, so you know the figure before anyone is on site. To start the process, call 01277 525 020 or email a schedule or drawings.
About our mastic sealing in Sonning
Before work starts, most agents and landlords want the documents in order. Tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we’ll confirm with the quote. We are CHAS accredited and a Constructionline member, with public liability insurance. We work on external wall and movement joints, balcony and threshold joints and communal kitchens and washrooms, and the usual reasons a site gets in touch are damaged joints in communal entrances and corridors and estate-wide sealant that is simply worn out. Most enquiries from Sonning start with one failed joint and grow into a wider look at the building: we check the joints around it and give you an honest view of what needs doing now and what can wait.
Owners and agents with buildings around smaller places such as Sonning tend to manage small terraces of association properties, converted barns and commercial units. Frame and wall-joint mastic on all of them ages and hardens.
Every job ends the same way: guaranteed. You get a 12-month guarantee on our workmanship, and we explain exactly what that covers when we quote.
- Location
- Sonning (RG4)
- Wider area
- Wokingham
- Guarantee
- A 12-month guarantee
- Quote
- Quoted before any work starts
- Phone
- 01277 525 020
- Page updated
- 3 November 2026
Towns and villages near Sonning
What else we do in Sonning
Should maintenance staff do it?
Using site staff can make sense for a small touch-up, but anything bigger is another matter: a specialist works through quantities efficiently, leaves a consistent finish and backs it with a 12-month guarantee.
Some joints are best left to specialists: fire-rated seals that must follow a tested detail, trafficked floor joints and external movement joints among them. A poor seal in places like these tends to cost more to put right later.
From enquiry to sign-off
In a busy building, the work is phased so only one area is out of use at a time. Each section is protected, cleaned back and sealed before we move to the next. Smaller jobs around Sonning can be grouped with others nearby. A fixed quote is given before anything starts.
- A building-by-building inspection lists the failed joints.
- The quote is fixed and split as suits you.
- Dates and areas are agreed so occupiers can be told.
- Failed sealant is removed and the faces prepared.
- New sealant goes in with backing rod and primer where needed.
- We check the finished work and confirm the guarantee.
Preparing the site
- Point out parking and an unloading spot
- Have the specification and drawings to hand
- Point out any areas we must not close
Quotes
Send us photos, drawings or a joint schedule are often enough for a fixed quote. If the job needs a look first, we’ll arrange a site visit.
Read more
Work for main contractors and building owners
We work for building owners and managing agents on sealant work across single buildings or whole portfolios around Sonning. Several sites can go on one quote, so there’s one set of paperwork to deal with.
Main contractors use us as their sealant subcontractor on new-build and refurbishment projects. We work to your programme, your specification and your site rules, and our applicators hold CSCS cards.
Planned mastic for Sonning portfolios
Rainfall across the South East, Sonning included, is lower than in many parts of the UK. Even so, frame mastic only goes on in dry, workable conditions, and elevations facing the sun and the prevailing weather are typically where frame mastic ages first. Sonning is about 35 miles from central London. Within reach of London, blocks run by agents and associations are common around stations.
Trustees of buildings like St Andrew's Church can bring frame and external mastic into a planned maintenance list. Buildings close to stations like Twyford station, 1.9 miles to the east of Sonning, are often flats over shops, with frame mastic to keep sound. Schools and community buildings such as Sonning Church of England Primary School need frame and external mastic kept sound like any building.
Sonning is about 1 mile north-west of Woodley, in Wokingham. We send applicators to Sonning for mastic joints. We work across 42 places in Wokingham, large and small.
If you need mastic sealing in RG4, the process matches everywhere else we work: send details, get a quote, we seal, guaranteed. For a building on High Street, Parkway Drive and Pound Lane or nearby, send details and we’ll quote for mastic joints. You’ll find Sonning on or near the B478 and B4446. We also cover Play Hatch (1 mile north-west), Dunsden Green (2 miles north-west), Newtown (2 miles south-west), Caversham Park Village (2 miles north-west) and Littlestead Green (2 miles north-west) for mastic joints. Further afield, our area takes in Wokingham (5 miles south-east), Earley (3 miles south-west), Crowthorne (8 miles south-east), Lower Earley (3 miles south), Winnersh (3 miles south-east) and Shinfield (5 miles south-west).
What’s near Sonning
Locally, jobs take us to sites close to Bull Inn, Reading Blue Coat School and Ali's Pond Local Nature Reserve, among other places. The closest station to Sonning is Twyford station, about 1.9 miles east. A little further out are Royal Berkshire Hospital (2.6 miles south-west) and Berkshire Medical Heritage Centre Museum (2.5 miles south-west). The countryside around Sonning includes Sonning Hill and South Lake.
Why it’s worth doing now in Sonning
Draughts round window perimeters cost occupiers comfort, and they often blame the windows. Resealing the perimeters is often the simpler fix where the frames themselves are sound. Around Sonning, it’s better to renew all the failing joints at once. Send photographs of each area and we will quote for the lot.
We don’t publish prices, because the scope varies so much from one building to the next. For a fixed figure, call for a quote.
Why clients in Sonning choose us
- Workmanship guaranteed for 12 months
- CHAS accredited contractor
- CSCS-carded applicators
- A Constructionline member, so easy to vet
Read what affects the cost and how we’re accredited.
Maintenance after handover
Keep the joints in good shape with a few simple steps:
- Keep bins and bikes away from communal door frames
- Have the asbestos survey to hand for older buildings
- Check sealant joints during planned building inspections
- Look at the sunniest and most exposed elevations first
If paintable sealant was used, decoration can follow once it has cured. Silicone typically can’t be painted, so keep decorators off it unless told otherwise.
Planned resealing is easier to budget than emergency repairs. We can quote buildings in priority order and work down the list.
Questions we are asked in Sonning
Can you work at a site such as Loddon Vale Shopping Centre, by Sonning?
Yes, sites like Loddon Vale Shopping Centre are within our area, along with the rest of Sonning. A few photographs and the unit address let us price the work.
We manage a building near Twyford station. Can you help?
Yes, we work for agents, landlords and housing associations with blocks of every size. Send the address, photographs of the elevations and your access arrangements, and we’ll give a fixed quote.
Do you work with property factors and landlords?
Yes. Most of our mastic sealing is for agents, factors, housing associations and portfolio landlords and work can be quoted per building or as a whole.
Can you seal joints high up on a block?
Access is discussed and agreed before the quote is fixed. Tell us the number of storeys and whether scaffold or other access is planned and we’ll confirm the approach in the quote.
Do you cover Sonning?
Yes. We cover Sonning and the rest of Wokingham. To discuss a job, call 01277 525 020 or send photos by email.
Which sealant will you use?
The specification comes first, if there is one. If there isn’t one, it comes down to the joint: its movement, its surfaces and what it has to cope with.
What if the old mastic contains asbestos?
In older buildings, old mastic can contain asbestos. We ask for the asbestos register or survey before work starts, and if it’s suspected, work stops until it’s tested.