Sandown mastic sealing
Need mastic sealing in Sandown? Send us the details for a fixed quote, backed by a 12-month guarantee on the work.
- Damp patches beside frames
- Draught complaints from residents or tenants
- Communal area joints that look neglected
Mastic sealing near Sandown
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
About our mastic sealing in Sandown
Different joints need different sealants. Window perimeters and external joints often take a low-modulus neutral-cure silicone, and MS polymer sealants stick well to many substrates and often take paint, and colours are confirmed for whichever product is used. The enquiries we see most involve complaints coming in block by block and communal area joints that look neglected, on external wall and movement joints, balcony and threshold joints and shopfronts below residential blocks. Most enquiries from Sandown start with one failed joint and grow into a wider look at the building: we look at the rest while we’re there and tell you what we find.
Converted and older buildings in and around Sandown often put modern windows into old walls. Perimeter joints need a sealant that suits both frame and masonry.
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’ll arrange a return visit.
- Location
- Sandown (PO36, PO37)
- Wider area
- Isle of Wight
- Cover
- 12 months on our workmanship
- Quote
- Quoted before any work starts
- Phone
- 01277 525 020
- Page updated
- 3 November 2026
Do you need mastic sealing in Sandown?
Topping up old mastic is a common shortcut. New sealant won’t grip failed sealant and the repair soon fails.
Clients usually get in touch after noticing one or more of the following:
- Cracked, hardened mastic round windows on a block
- Mastic failing across several blocks on an estate
- Damp patches beside frames
- Occupiers reporting cold air round windows
Property owners at sites such as Spithead Business Centre (to the south-west of Sandown) can have mastic renewed between lettings.
Before you book anyone
- How the existing material will be dealt with
- Is depth set with backing rod, or bond-breaker tape in shallow joints?
- Which product they’ll use, and why it suits the joint
- Will CSCS-carded applicators be on site?
On site: what to expect
We follow your site rules from the start: signing in, inductions and any permit to work. Once we’re cleared to begin, the joints are worked through in the order agreed with your site contact. Several jobs near Sandown can be grouped on one trip. Tell us your site hours and we’ll plan around them.
- A building-by-building inspection lists the failed joints.
- You get a fixed quote, per block or for the whole programme.
- Dates and areas are agreed so occupiers can be told.
- Failed sealant is removed and the faces prepared.
- Joints are resealed and tooled.
- Each building is checked and signed off with the 12-month guarantee.
What we need from you
- Tell us which areas need to stay in use
- Send any specification or drawings in advance
- Let us know about inductions and permits
Get a fixed quote
If there’s a specification, drawings or a tender package, send it with your enquiry, and we will price the work to it. Smaller jobs need nothing more than photographs and a few notes.
Advice
Common questions from Sandown clients
Does a coastal location like Sandown affect which sealant is used?
It can. Coastal exposure works external joints harder than inland weather. That puts more weight on product choice, primers where the manufacturer specifies them, and correct joint sizing.
Can you work at a site such as Spithead Business Centre, by Sandown?
Yes. Our area takes in Sandown and its surroundings, with estates and business parks such as Spithead Business Centre included. Photos and a short description are enough for a first look.
Is any job too small?
Whatever the size, the process is the same: send details, get a fixed quote, we seal, guaranteed.
How long does a typical visit take?
That varies with the scale of the job, but the work usually takes a day or two for a single block, longer for an estate programme. Larger or phased jobs take longer, and we will give you a timescale with the quote.
Can you take on resealing for a block portfolio?
Yes, block and estate work is a core part of what we do. Buildings are scheduled in turn so you can plan around it.
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.
Do you supply RAMS and insurance details?
Let us know your requirements: tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we will confirm with the quote. We are CHAS accredited and a Constructionline member.
Blocks and managed buildings in Sandown
Sandown sits close to the coast, within about 1 mile. For owners and agents with buildings near the sea, exposed elevations are where frame mastic fails first. The South East is one of the drier parts of the UK. Outside mastic still needs a dry joint and the right temperature, while the elevations that take the most sun tend to show hardened mastic first.
Site managers at schools like The Bay Church of England School can fit frame mastic into the summer works. Trustees of buildings like Christ Church can bring frame and external mastic into a planned maintenance list.
Sandown is about 10 miles south of Gosport, in the Isle of Wight. Anywhere in PO36, the process is the same: details in, fixed quote out, then sealing and a 12-month guarantee. 125 places across the Isle of Wight fall within our area, Sandown among them. Portsmouth is covered too, some 11 miles away.
We take on mastic joints across the PO36 and PO37 postcode area, whatever the building. If your site is on High Street, Nunwell Street and Park Rise or close by, send details and we will quote for mastic joints. Access to Sandown is via the A3055 and A3056. We also cover Lake (1 mile south-west), Yaverland (1 mile north-east), Adgestone (1 mile north), Alverstone (1 mile north-west) and Morton (1 mile north-east). A short drive away, we cover Newport (7 miles north-west), Ryde (5 miles north), Cowes (10 miles north-west), Ventnor (5 miles south-west), East Cowes (9 miles north-west) and Oakfield (5 miles north). Sandown is one of the busier places in the Isle of Wight, and its commercial and public buildings are all within our area. For island and remote sites, travel and materials need planning ahead, so the full address helps from the start.
What’s near Sandown
Locally, jobs take us to sites close to The Old Comical pub, Sandown Bay Academy and Broadlea Primary School, among other places. Sandown has its own railway station: Sandown station. Nearby you’ll also find National Poo Museum (less than half a mile south) and Arthur Webster Memorial Hospital for Children (1.6 miles south-west). Open spaces near Sandown include Alverstone Mead and Brading Down.
When it isn’t the sealant
Before quoting, we check that sealant is the right answer. It won’t put right:
- Old mastic suspected of containing asbestos, which must be tested and dealt with by a specialist first
- Misted or failed double-glazed units
- Leaks from above rather than through a joint
If you are not sure, just give us a call on 01277 525 020 or send details through our quote form and we’ll give you a straight answer.
Where we work in Sandown
- External wall and movement joints
- Window and door perimeters on blocks
- Balcony and threshold joints
- Shopfronts below residential blocks
- Communal entrances and stairwells
- Communal kitchens and washrooms
Nearby places to Sandown
More services for Sandown
Site staff or a sealant specialist?
Site maintenance staff can often handle a short internal joint. Where it goes wrong is preparation: sealing over old material, sealing onto damp or dusty surfaces, or a product that can’t take the movement.
The visible bead is only part of the job. Correct depth, the right primer and a sealant matched to the movement are where general trades tend to cut corners.
Cost factors for mastic joints
Before we quote, we look at:
- Whether the work must be split into stages
- Quantities, in metres or numbers
- Access and working height
- Backing rod, priming and other preparation
Pricing mastic joints depends on quantities, condition and access, and any specification that applies. Call for a quote.
Sending details for a quote
There’s no need for a formal survey. These details are enough to start:
- Where the site is, with the postcode
- Your programme or deadline
- Clear photographs of the problem areas
- The asbestos register, for older buildings
Quotes are fixed against the scope you send, so the cost is agreed before work starts. To start the process, phone 01277 525 020 or email a schedule or drawings.
Commercial clients in Sandown
Facilities managers want contractors who arrive with the paperwork sorted. Tell us what site paperwork you need, such as RAMS, an insurance certificate or CSCS details, and we will confirm with the quote.
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. Keys, access and contacts can be agreed in advance.