The Mastic Doctor team standing beside their branded vans outside an office building
Portsmouth · England

Facade Sealing contractors in Portsmouth Point

Planning work on a facade joint in Portsmouth Point? We look at it, seal it with the right product and hand it over with a 12-month guarantee.

  • Hard, chalky sealant that no longer flexes
  • Draughts around frames and panels
  • Previous reseals run over old sealant
1
Send details
Send the specification, photos or a marked-up plan.
2
Get a quote
A fixed quote for the work, with the scope in writing.
3
We seal
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
Our workmanship is guaranteed for 12 months.
South East, London & Scotland
CHAS accredited
£5m public liability

Facade sealing across Portsmouth Point

Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.

Facade sealing in Portsmouth Point: the local picture

Portsmouth Point sits close to the coast, within about 1 mile. Facades and window perimeters on coastal schemes take more wind-driven rain, and salt air nearer the shore, and the sealant, primer and backing need choosing with that in mind. The area within 2 miles of Portsmouth Point holds plenty of hotels. When hotels extend or refit, the work is normally squeezed between peak periods, mastic included.

New units and refits on sites such as Cranbourne Industrial Estate, 1.1 miles to the west of Portsmouth Point, need their panel and perimeter joints sealed to the specification. On a campus such as University of Portsmouth - North Zone, 0.5 miles north-east of Portsmouth Point, new teaching buildings and residences are usually built and refurbished around the academic year. Further education sites such as St Vincent College (1.5 miles north-west of Portsmouth Point) are extended and refurbished from time to time, with mastic often programmed into the summer break.

Portsmouth Point is about 2 miles west of Southsea, in Portsmouth. Looking for facade sealing in Portsmouth Point? We can help, as we do across Portsmouth. We work across 19 places in Portsmouth.

Anyone looking for facade sealing in PO1, PO5 and PO12 gets the same process as the rest of our area: send details, get a quote, we seal, guaranteed. Buildings on Park Road, Nobbs Lane and Bath Square are within our area for facade joints. Close to Portsmouth Point, our area also takes in Portsea (1 mile north), Clayhall (1 mile south-west), Haslar (1 mile south-west), Alverstoke (2 miles south-west) and Privett (2 miles west). Nearby towns on our patch include Hilsea (3 miles north-east), Wymering (4 miles north), Paulsgrove (4 miles north), Cosham (4 miles north-east), Drayton (5 miles north-east) and Farlington (5 miles north-east).

Around Portsmouth Point

We work on buildings around Charter Academy, Portsmouth Grammar School and Bridge Tavern and the streets around them. There’s a railway station in Portsmouth Point itself: Portsmouth Harbour station. Other landmarks nearby include Southsea Castle (1.2 miles south-east) and Portsmouth Museum And Art Gallery (under half a mile east). Not far away are Portsdown Hill and Milton Locks.

Map of Portsmouth Point © OpenStreetMap contributors

How we handle facade sealing in Portsmouth Point

Managing agents and owners in Portsmouth Point ask us to, we reseal perimeters across whole elevations or a handful of problem windows. The approach doesn’t change with the size: old sealant out, faces cleaned, depth set and a new bead tooled in. A 12-month guarantee applies to our workmanship. Site teams most often ask us about weathered joints at frame-to-structure perimeters and sealant pulling away from frames or panels, on window and door perimeters, shopfront frames and stone and brick facade joints. Sealant contractors, mastic applicators, sealant specialists: whatever the job title on the order, the work in Portsmouth Point is the same: failed joints cut out, faces prepared and the right sealant laid to the right depth.

On a small site around Portsmouth Point, the mastic is best done in the fewest visits we can manage. Tell us when scaffold comes down and when decoration finishes, and we will plan around those stages.

Work we carry out comes with a 12-month guarantee. If an installation problem shows up, speak to us on 01277 525 020 or send details through our quote form and we will arrange a return visit.

Mastic Doctor team members lined up next to their branded vans outside an office building
Where
Portsmouth Point (PO1, PO5, PO12)
Region
Portsmouth
Guarantee
12 months on every job
Quote
Fixed quote, scope in writing
Phone
01277 525 020
Updated
3 November 2026

Why it’s worth doing now in Portsmouth Point

Topping up a failed joint typically buys very little time. A full cut-out and fresh bead is the repair that holds. A failed joint lets water into a building whatever its size. Catching it early means a reseal rather than repairs.

Access often affects the price as much as the sealing: easy-to-reach joints are quicker than those that need equipment to get to. Tell us how the joints are reached and call for a quote.

What you get with us

  • RAL and finish matching where the product range allows
  • Constructionline member
  • CHAS accredited contractor
  • One contact handling all your sites

Read how commercial sealant jobs are priced and our accreditations.

Our process

Inspect, seal, sign off: every visit follows that pattern. First comes an inspection and agreement on scope, then the work is carried out to the specified product and detail, and the job ends with a walk round and sign-off. For a site in Portsmouth Point, we plan so the whole job is done in one go where possible. Clear photos and measurements help us bring the right products.

  1. We plan access and the order of elevations with the client.
  2. Weather and temperature are checked against the product’s limits.
  3. Each joint is cut out and the edges inspected.
  4. Faces are cleaned, primed where needed and backed.
  5. Facade-grade sealant goes in and is tooled to a tidy concave profile.
  6. We hand over with our 12-month workmanship guarantee.

Getting the site ready

  • Have the specification and drawings to hand
  • Agree which areas must stay open
  • Let us know about inductions and permits

Quotes

A good quote starts with a clear picture: the joints involved, quantities, access and the product called for. Share whatever details you have and we’ll fill any gaps with a visit.

Get a price

Read more

For managing agents and facilities managers

As a CHAS accredited contractor and Constructionline member, we are straightforward to vet for your supplier list. Our insurance certificate can be sent along with the quote.

Hotels, schools, healthcare sites, offices and retail units book us directly too. We plan around the way the building is used, so the building keeps working while we do.

What sealant work can’t fix

We seal joints; we don’t mend everything behind them. Sealant alone won’t deal with:

  • Work on the window or framing system itself
  • Cracked or spalling substrates that need repair before sealing
  • Providing access systems for the work

If you are not sure, just phone 01277 525 020 or email a schedule or drawings and we will give you a straight answer.

Where we work in Portsmouth Point

  • Cladding panel joints
  • Window and door perimeters
  • Perimeter joints where frames meet the structure
  • Coping and flashing joints
  • Stone and brick facade joints
  • Shopfront frames

Keeping the joints sound

To get the most from the new sealant:

  • Record the product and colour used on each elevation
  • Ask about asbestos in pre-2000 mastic
  • Insist on a full cut-out when joints are renewed
  • Brief window cleaners about newly sealed joints

Following storms, look inside for damp or staining near frames. Catching a new leak early keeps the repair small.

Don’t wait for a full elevation to fail. Small repairs stop small leaks becoming large ones.

How the job changes by surface

Render and coated surfaces

Sealant can only hold as well as the render or paint beneath it. We remove flaking material so the bead bonds to a firm surface.

Perimeter joints at frames and structure

These frame-to-structure joints take a lot of movement and weather. We cut them out, prepare both faces and reseal to the specification using a sealant classified for that use.

Portsmouth Point: questions and answers

Can work at a site such as University of Portsmouth - North Zone fit around teaching?

Yes. Education sites typically want the work in vacations or in phases during term, and we plan to suit. Any paperwork you need, from RAMS to our insurance certificate and CSCS details, is confirmed with the quote.

Can you work on a hospital site such as Gosport War Memorial Hospital?

Yes. We work in healthcare settings as well as offices and schools. Before anything starts, the estates team agrees permits, inductions and infection-control measures with us.

Can you just add new sealant on top?

No. Fresh silicone won’t grip cured silicone, so the existing bead is removed entirely and the faces are cleaned before resealing. That is what makes the new joint last.

Do you work to architects’ specifications?

Yes. The specification and the manufacturer’s installation guidance are what we work to, and any queries are raised before we start.

Do you guarantee your work?

Yes. The 12-month guarantee covers our preparation and application, but not damage, misuse or other trades’ work.

Will your applicators have CSCS cards?

Yes. We use CSCS-carded applicators, which many sites require.

How long before the joints can be used?

The product and site conditions decide that. Some products skin over quickly but need longer to cure fully, and we confirm it before leaving site.

Accreditations

Trusted. Accredited. Insured.