Mastic sealing for building owners and managing agents in Borden, West Sussex
Mastic sealing for building owners, managing agents and housing associations in Borden and across West Sussex. CHAS accredited and fully insured, with a 12-month guarantee.
- Failed external movement joints
- Worn sealant at communal door frames
- Draughts at frames across a block
Mastic sealing across Borden
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
Owners, agents and contractors
Whether you are a managing agent, a property factor or an owner’s representative: send the details, accept a fixed quote, and we carry out and guarantee the work. We can agree access arrangements and keyholder contacts beforehand.
Hospitality, education, healthcare, office and retail clients come to us directly as well. We plan around the way the building is used, so the building keeps working while we do.
About our mastic sealing in Borden
Different joints need different sealants. Low-modulus neutral-cure silicone suits many window perimeters and external movement joints, while hybrid polymer sealants grip many materials and are often paintable. We’ll confirm the colours available for the specified product. We work on communal entrances and stairwells, balcony and threshold joints and external wall and movement joints, and the failures we are asked to look at most are draughts at frames across a block and cracked, hardened mastic round windows on a block. One point of contact handles commercial sealant work in Borden from the first photos to the final walk-round, for single jobs and planned programmes alike.
Owners and agents with buildings around smaller places such as Borden tend to manage small terraces of association properties, converted barns and commercial units. Mastic around frames and on external joints wears out in time, whatever the building.
The 12-month guarantee is for workmanship rather than wear and tear. Sealant wears with time, and movement, weather, cleaning and use decide how fast, so we spell out the cover before we begin.
- Where
- Borden (GU30)
- Wider area
- West Sussex
- Guarantee
- A 12-month guarantee
- Quote
- Fixed quote, scope in writing
- Phone
- 01277 525 020
- Last updated
- 3 November 2026
Common questions from Borden clients
Do you work for managing agents with blocks near Liss station?
Yes. Managing agents, landlords, property factors and housing associations are who this service is for. Photos of each elevation help us quote accurately.
Will you price a mastic programme across our Borden portfolio?
Yes. Portfolio-wide programmes are a regular request. Residents are given notice through you, and the work moves building by building.
Is it fine to apply new sealant on top of old?
No, never. Overlaying old sealant is a frequent cause of early failure, so it all comes out first.
Is asbestos a concern with old mastic?
Some mastics in pre-2000 buildings contain asbestos. We check the asbestos register or survey before disturbing it, and if it’s suspected, work stops until it’s tested.
How do you reach windows on upper floors?
Access is discussed and agreed before the quote is fixed. Tell us the building height and any access already in place and we will confirm the approach in the quote.
When can the area be used after sealing?
That comes down to the sealant and the temperature. Some products skin over quickly but need longer to cure fully, and we confirm it before leaving site.
Can you work to our specification?
Yes. We follow the specification, along with the manufacturer’s installation guidance, and any queries are raised before we start.
From enquiry to sign-off
We begin with a short walk round with whoever looks after the building, agreeing which joints are in scope, where to start and what must stay open. After that, any old or failed material is removed, each joint is prepared and the new sealant goes in. If others near Borden need work, visits can be combined, which keeps travel down. A fixed quote is given before anything starts.
- Each block or building is walked and the failed joints recorded with the likely cause.
- We send a fixed quote that sets out the joints, the products and the programme.
- Dates, areas and access are agreed so residents or tenants can be told in advance.
- Old sealant is stripped and each face prepared back to firm material.
- Backing rod and primer go in as the joint requires, then the new bead is placed and tooled.
- Completed joints are inspected and carry a 12-month workmanship guarantee.
Before we start on site
- Clear stock, furniture or equipment away from the joints
- Tell us your opening times and when work is allowed
- Point out any areas we must not close
Get a fixed quote
Need a figure for a tender or a budget? Send the scope and any drawings, and we’ll return a fixed quote that you can work with. For a chat about it beforehand, phone 01277 525 020 or email drawings and photos.
Related advice
When it isn’t the sealant
Not every problem is a sealant problem, and we are upfront when that’s the case. These need a different solution:
- Materials that need asbestos testing before work
- Leaks from above rather than through a joint
- Substrate edges that need repairing first
Not sure which it is? You can speak to us on 01277 525 020 or use the quote form and we will tell you honestly before you book.
Joints and surfaces we work on
- External wall and movement joints
- Communal entrances and stairwells
- Communal kitchens and washrooms
- Balcony and threshold joints
- Window and door perimeters on blocks
- Shopfronts below residential blocks
Keeping the joints sound
For the best life from the joints:
- Encourage occupiers to report problems at frames
- Check sealant joints during planned building inspections
- Track which buildings were done and when
- Reduce knocks to communal area joints
Keep records of when each building was resealed. It helps plan the next round and gives you a history.
Joints on a building age together, so it pays to look at the whole elevation. Doing them together saves going back again and again.
Different surfaces, different methods
Communal areas
Communal entrances, stairwells and corridors have joints at door frames, screens, skirting and floor edges. Fresh joints make shared areas look looked after.
Commercial and mixed-use buildings
Where retail and residential share a building, so phasing has to suit both. We plan around the site hours and access windows you give us.
When to call us in Borden
Previous repairs often sealed new mastic over old. New silicone has nothing to grip on old silicone, so these repairs rarely last.
What tends to prompt an enquiry:
- Cracked, hardened mastic round windows on a block
- Draught complaints from residents or tenants
- Damp patches beside frames
- Failed external movement joints
Older buildings near Borden, from historic houses such as Cowdray House (4.4 miles south-east of Borden) to more modest stock, need compatible products when frames are resealed.
Before you book anyone
- How they’ll work around occupants
- Is depth set with backing rod, or bond-breaker tape in shallow joints?
- The named product and why it was chosen
- What the guarantee covers, and for how long
Looking after buildings in and around Borden
Central London is about 46 miles from Borden. Within reach of London, blocks run by agents and associations are common around stations. Borden sits in one of the drier corners of the country, the South East. Even so, frame mastic only goes on in dry, workable conditions, and south- and west-facing elevations, which take the most sun and rain, often age first.
If you look after a block within reach of Liss station (3.6 miles north-west of Borden), frame and balcony mastic can be renewed on one programme. Churches, halls and community buildings such as Church of St Peter are looked after by trustees and committees like any other owner, and their frames, doors and external joints need mastic renewed in time.
Borden is about 5 miles east of Petersfield, in West Sussex. Borden sits inside our coverage and the rest of West Sussex, with the same fixed quotes and 12-month guarantee as everywhere else. Our West Sussex coverage takes in 373 places. Sites around Portsmouth have their own page, roughly 18 miles from Borden.
Postcode districts covered here: GU30 for mastic joints. Just outside Borden, we also work in Trotton Marsh (1 mile east), Rogate (1 mile south-west), Chithurst (1 mile south-east), Milland (2 miles north-east) and Rake (2 miles north-west). Nearby towns on our patch include Chichester (12 miles south), Portfield (13 miles south), Midhurst (4 miles south-east), Southbourne (12 miles south), Pulborough (14 miles east) and Westergate (14 miles south-east).
What’s near Borden
Borden’s nearest station is Liss station, roughly 3.6 miles north-west. Well-known places in the area include Midhurst Community Hospital (4.1 miles south-east). The countryside around Borden includes Iping and Stedham Commons and Wheeler's Down.