South East England and London
Commercial sealant contractors in Portsmouth
We cover 19 towns and villages across Portsmouth for commercial sealant, construction mastic, expansion joints, fire-rated sealing and more, with a 12-month guarantee on our workmanship.
Mastic and sealant across Portsmouth
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
Sealant work we carry out in Portsmouth
Every service below opens a full list of the places we cover in Portsmouth; the A to Z further down lists each town and village.
- Facade and window perimeter sealing in Portsmouth
- Fire-rated sealing and fire stopping in Portsmouth
- Commercial washroom and wet-area sealing in Portsmouth
- Industrial and floor joint sealing in Portsmouth
- Construction and new-build mastic in Portsmouth
- Expansion and movement joint sealing in Portsmouth
- Commercial sealant contractors in Portsmouth
- Mastic sealing for building owners and managing agents in Portsmouth
- Coloured and colour-matched sealant in Portsmouth
Commercial sealant contractors across Portsmouth: what to expect
Mastic Doctor has been sealing joints for businesses and contractors since 2005, and the paperwork side is in order: CHAS accredited, Constructionline member, five million pounds of public liability insurance and CSCS-carded applicators. Let us know which site documents you need and they’ll be confirmed with the quote. Site teams most often ask us about weathered facade sealant that no longer flexes and a top-up bead over failed sealant, now lifting, across washrooms and tea points, movement joints in walls and floors and window and door perimeters.
We schedule the visit to fit the site hours and access windows you give us. While we’re working, the area stays contained and tidy, and your contact hears from us before we move to the next area.
- You send photographs, drawings or a list of the joints and areas involved.
- The failure is diagnosed and a fixed quote issued for the work agreed.
- Before anything is cut out, we agree access, timings and sequence.
- We strip the failed bead and prepare both faces of the joint.
- We fit backing to the right depth, prime where specified and lay the new bead.
- We walk the completed areas with you and sign them off under the 12-month guarantee.
Pricing in Portsmouth
The price depends on how many linear metres there are, what has to come out first and the access. Call for a fixed quote when you are ready.
Why choose Mastic Doctor
- Work to your specification and the manufacturer’s guidance
- CHAS accredited contractor
- One phone line for London, the South East and Scotland
- Joints cleaned back to sound surfaces
Quotes
Let us know the site, the scope and your timescale, and we will put a fixed quote together. The easiest way is to give us a call on 01277 525 020 or email us.
Near you in Portsmouth
Locally, jobs take us to sites close to Manor Infant School, Alexandra Park and St Wilfrid, among other places. Also close by are The Druids Arms (less than half a mile north-east), The Portsmouth Academy (less than half a mile south-east) and St Edmund's Catholic School (0.7 miles south-west). The closest station to Portsmouth is Fratton station, about 0.9 miles south. Nearby you’ll also find Royal Portsmouth Hospital (0.7 miles south-west) and Charles Dickens Birthplace Museum (under half a mile west). Green spaces nearby include Milton Locks and Portsdown Hill.
Commercial sealant contractors across Portsmouth: the area picture
From Southsea, Milton and Landport outwards, Portsmouth has a broad spread of commercial premises: shops, offices, hotels, restaurants and units. Because we cover all of it, multi-site occupiers can bring every building under one quote, with colours matched site to site where the brand needs it.
We work across Greater London and the South East counties, so jobs in Portsmouth are planned with access, loading and parking in mind. On the coastal side of Portsmouth, sea-facing elevations normally show failed joints first, so they’re worth inspecting more often.
Portsmouth: Retail sites such as Victory Retail Park, 0.5 miles to the west of Portsmouth, are typical of where shop-fit joints, frontages and staff areas need neat, colour-matched sealant. Premises within reach of Fratton station (0.9 miles south of Portsmouth) often have busy frontages where joints are seen by everyone passing.
Leave it or put it right?
On many buildings the mastic was done by whichever trade was on site. A specialist applicator takes care of product choice, joint depth and preparation, the three things that decide how long a joint lasts. It shows over the following seasons rather than at handover.
What your quote should include
- Whether old or failed sealant will be cut out, not overlaid
- Their public liability cover
- What site paperwork they can supply
- How joint depth will be controlled
Commercial clients in Portsmouth
Agents, factors and owners’ representatives all follow the same route: send details, get a fixed quote, we seal, guaranteed. We can agree access arrangements and keyholder contacts beforehand.
We take on planned maintenance as well as one-off repairs: working through a building or an estate in stages that fit your budget. Sites in Portsmouth can sit alongside others in a wider programme across Portsmouth.
Doing it in-house
For a quick touch-up, site staff may be fine, but anything bigger is another matter: a specialist works through quantities efficiently, leaves a consistent finish and backs it with a 12-month guarantee.
Putting right a botched joint often costs more than sealing it well at the start, since all of it has to come out and the faces be cleaned back again. That’s why many clients bring in a specialist from the beginning.
Cost factors for sealant joints
Your fixed quote is built from the real scope. It takes account of:
- Distance, for remote addresses
- The size and state of each joint
- How much existing material needs removing
- Site requirements such as inductions and permits
Whether it’s a single area or a whole estate, the same things set the price: scope, access, product and programme. Call for a quote, and you will have a fixed figure to work with.
What we need to price the job
To price the job accurately, we need to understand the site. Useful things to include:
- Whether an asbestos survey exists
- A wide shot and a close-up of the area
- What the building is and how it’s used
- Any dates the work must fit around
Send details, get a quote, we seal, guaranteed: that’s how every job runs. To take the first step, ring 01277 525 020 or send photos by email.
Why it fails
If only one face has lost its grip, that’s an adhesion failure. The usual causes are poor preparation, a missed primer, contamination on the joint face or sealant bonded to the base of the joint. We see it often where joints were sealed in a hurry.
Clients normally get in touch after noticing one or more of the following:
- Wall and floor joints that have lost their seal
- Water staining near frames, panels or ceilings
- External beads that have gone brittle and cracked
- Frame mastic that has hardened and come away from the wall
Questions about Portsmouth
How long before the joints can be used?
Curing time varies by product, and we confirm it on the day, and flag anything to keep off until it has cured.
Can you work to our specification?
Yes. Include it with the drawings when you ask for a quote, and we will price the work to it, flagging anything that needs clarifying.
How do you choose the sealant?
A specification, where there is one, decides it. If there isn’t one, it comes down to the joint: its movement, its surfaces and what it has to cope with.
Is it fine to apply new sealant on top of old?
No, never. Overlaying old sealant is a frequent cause of early failure, so everything comes out first.
Is Portsmouth in your area?
Yes. Sites across Portsmouth are covered.
How is commercial sealant work priced?
Photos, drawings or a schedule of the joints are normally enough to start through our quote form. If a visit is needed we’ll book one, and a fixed quote follows.
Will your applicators have CSCS cards?
Yes. If you need card details for site access, tell us and we will confirm them with the quote.