St James is a narrow strip of grand old houses squeezed between the mountain and False Bay, best known for its colourful bathing boxes and tidal pool. With the mountain right behind and the sea in front, homes deal with damp, wind and wildlife all year.
The local picture in St James
Old wooden verandas, floors and roof beams here are prone to wood borer, and buyers usually ask for a beetle certificate.
Many homes are large Edwardian and Victorian houses on steep plots, with timber floors, wooden verandas and big roof spaces. There are also flats and newer homes higher up the slope. Steep sites, terraced gardens and stone retaining walls give rodents and spiders lots of hiding places. Old timber and damp sea air create ideal conditions for fishmoths and wood borer.
The suburb sits at the foot of the mountain in Table Mountain National Park, with the Main Road and railway line running along the coast. Sea spray, damp winters and the South-Easter in summer all play a part. Wildlife from the mountain, including baboons and rodents, comes right down to the gardens.
Rats and mice from the mountain slopes are the biggest problem, with fishmoths and wood borer close behind. Ants and spiders are common in summer, and gulls and pigeons are regular around the coast.
What gives them away
- Droppings on beams or along the top of walls under the thatch.
- Small round exit holes in the poles, especially in the paler sapwood.
- Birds pulling reed out of the roof or nesting under the eaves.
- Insects such as cockroaches or spiders falling from the ceiling.
Borer in the poles and laths weakens the timbers that carry the weight of the thatch, which is heavy, and serious damage can mean replacing structural members. Rodents nesting in thatch chew electrical cables, and in a thatch roof that is a fire risk to take seriously. Insects dropping from an open thatch ceiling are a nuisance in homes and a real problem in guest lodges and restaurants. Bird nests in thatch can bring mites into bedrooms below.
From the technician
For holiday rentals and lodges, insects falling from an open thatch ceiling are the kind of thing guests photograph. An annual check before the busy season is cheap insurance.
Cables running through thatch should be in conduit. Rodent damage to a bare cable in a thatch roof is a fire risk that is easy to prevent.
How we handle thatch treatment in St James
We start by inspecting the underside of the roof, the poles, the laths and the eaves, looking for borer exit holes, frass and rodent or bird activity. Affected poles and laths are treated with a borer spray or injection designed for timber, applied to the wood rather than soaked through the thatch. For insects living in the thatch, we use a targeted residual treatment on the underside, keeping it as light as will do the job. Rodents are handled with traps and tamper-resistant bait stations placed at wall plates and entry points, and we advise on bird netting or proofing at the eaves. Fire safety of the thatch itself, such as retardant treatment, is a separate specialist job and we will tell you if it looks overdue.
Want the full step-by-step? See how our thatch treatment service works.
Stopping a repeat visit
- Keep trees and creepers trimmed back from the thatch so rodents cannot step straight onto the roof.
- Have electrical wiring in the roof inspected regularly, especially if you have had rodents.
- Ask your thatcher to check the poles and laths for borer whenever the roof is being repaired or re-combed.
- Have open thatch ceilings in lapas and lodges checked once a year, since problems are easy to see early.
- Fit bird netting or wire at the eaves if birds keep pulling reed or nesting there.
How much will it cost?
The price depends on the size of the roof, how much of the structure is exposed and how many poles and laths show borer activity. A small lapa with an open underside is a very different job from a double-storey home with a closed ceiling. Rodent and bird work is added where needed, and timber that is too damaged to treat has to be replaced by a builder or thatcher.
Adult borer beetles emerge mainly in the warmer months, so fresh powder and holes often appear from late spring into summer. Rodents move into thatch most during the wet Cape winters when it offers dry shelter. Treatment can be done at any time of year, though a dry day makes inspecting the roof easier.
Questions we get asked in St James
Will the treatment damage my thatch?
No. We treat the timbers directly and keep any treatment of the thatch itself light and targeted.
Do I need to move out?
Usually not. We will tell you which rooms to keep clear during treatment and for how long.
Do you come out to St James for thatch treatment?
Yes. St James is part of our regular South Peninsula route, along with Muizenberg, Kalk Bay, Lakeside. Most bookings are done within about 48 hours, and after-hours visits can be arranged.
Can you inspect my old St James home for wood borer before I sell?
Yes, we inspect floors, roof timbers and verandas and give you a written report. Many sales need a beetle certificate, so book early.
Why do I have so many fishmoths in my St James house?
Sea air and mountain damp keep old houses humid, and fishmoths love that. Drying out cupboards and a targeted treatment brings numbers down.
Is there a guarantee?
Our treatments carry a minimum 3-month guarantee, and the report records exactly what was treated.
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