Guildford, Bayswater & Maylands - Brick, Mortar & Limestone Repairs

Common Problems In The Area

If you own a brick home anywhere between Guildford and Maylands, chances are you have noticed one of three things. A crack that steps its way up through the brickwork near a window or a corner. Mortar joints gone so soft you can rake them out with a screwdriver. Or a chalky white tidemark and crumbling brick faces in the bottom few courses, always on the same wall.

Why Does It Happen?

The suburbs along this part of the Swan River sit on alluvial clay and silt rather than the deep sand most of Perth is built on, and clay swells when it is wet and shrinks when it dries out. That happens every year. On top of that, the old river flats carry a water table that sits high and close to the surface, so the bottom of a wall is often damp for months at a time. Add brickwork laid in soft lime mortar (handmade colonial brick in Guildford, 1920s and 1930s brick across Maylands and Bayswater) and you have the recipe for stepped cracks, fretting joints and rising damp.

Don’t Delay

All of it is repairable, and most of it is a small job if you catch it early. What turns it into an expensive one is the thing almost everybody tries first: packing the crack and raking in a hard grey cement mortar. Cement is stronger than the brick around it and it does not move. Put it into a wall that needs to flex, and the wall stops cracking at the joint, where a repair is cheap, and starts cracking through the bricks themselves, where it is not. We spend a good deal of our time on these streets cutting out somebody’s cement repair and putting the wall back the way it was built.

What We Repair Across Guildford, Bayswater and Maylands

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Why The Ground Here Cracks Walls

Most of Perth is built on sand. Sand drains, it does not hold water, and it barely changes volume through the year. A wall standing on sand that cracks has usually cracked for a reason you can point at — a failed lintel, a tree root, a leaking pipe.

Perth’s Inner North-East Is Different

The eastern river flats are made of material the Swan laid down over a very long time: clay, silt and sand in layers that change from one street to the next and sometimes from one end of a house to the other. Clay is the part that matters. It takes up water through winter and swells. It gives that water up through summer and shrinks. The ground under your footings is not still, it lifts and drops a little every year, and it does not do it evenly, because one corner of the house may sit over clay and another sits over sand.

That is what produces the classic fault we see here: a crack that steps diagonally up through the mortar joints, widest at the top, usually near an opening, and noticeably worse at the end of a long dry summer. It is seasonal movement, not subsidence, and the fix is to repair it in a mortar soft enough to keep absorbing that movement rather than to lock it solid.

Two More Things

Two more things make it worse, and both are common. Large established trees pull a great deal of moisture out of clay subsoil in summer, which dries the ground on one side of a house far more than the other. Also old clay sewer and stormwater lines with joints that leak, wetting clay in one spot all year round.

Guildford And The River Flats

The oldest building stock in the region standing on the softest ground, with the water table closest to the surface. Expect soft handmade brick, lime mortar, rising damp in the lower courses and seasonal movement. Heritage approval rules apply here in a way they do not further downriver.

Maylands and Bayswater

Federation and interwar brick-and-tile on mixed clay and sand, much of it originally tuckpointed. Stepped cracking, fretting joints and failed lintels are the regulars, plus a layer of 1960s and 1970s brick flats that bring problems of their own.

The Higher Ground

Streets set further back from the river sit on better-draining soil and move less. Walls here tend to fail through plain weathering and old cement repairs rather than ground movement.

Common Faults On Brickwork In This Area

Stepped Cracking Through Mortar Joints

A crack that climbs the wall diagonally, following the joints in a staircase pattern, usually near a window or door and often worst in late summer. This is the clay underneath shrinking unevenly. Provided the brickwork is otherwise sound, the repair is to stitch across the crack with helical bars bedded into the bed joints, then rake out and repoint the affected joints in a mortar with enough give in it to take next year’s movement. The mistake of filling it with cement or sealant will move the next crack into the middle of the bricks.

Mortar You Can Dig Out With A Screwdriver

Lime mortar is meant to be the soft part of the wall, it takes the movement and the moisture so the bricks do not have to. After eighty or a hundred years the outer layer of it has usually weathered back, and once a joint is recessed, water sits in it and the problem accelerates. Raking out to sound material and repointing in matched mortar is routine work, and the best-value thing you can do to an old brick wall.

Rising Damp In The Bottom Courses

A damp band across the lower part of a wall, often with white salt crystals on the surface and brick faces that flake away when you touch them. On the river flats this is groundwater drawn up through the brick by capillary action, carrying dissolved salts that crystallise as the water evaporates out of the face. The salt does the damage, not the water. Painting or rendering over it traps the moisture and pushes the damage higher up the wall. The fix is to find why the moisture is getting in, deal with that, then cut out and replace the brick that has gone.

Hard Cement Patches On Soft Old Brick

Grey cement mortar in a wall built with lime, or a band of cement render across the bottom of a house. It was standard practice for decades and it is the most common avoidable fault we find here. Cement is harder and less permeable than the brick beside it, so movement and moisture are both forced through the brick instead of the joint. You can usually see the result: sound joints with eroded brick faces either side of them.

Rusted Lintels Over Windows And Doors

A horizontal crack directly above a window, sometimes with the brickwork above lifted slightly or the render bulging. The steel lintel behind it is rusting, and rust takes up more room than steel, so it jacks the wall apart as it expands. It only goes one way. Replacement means propping the brickwork above, taking the old lintel out, fitting a new galvanised one, and rebuilding.

Fretting And Spalled Brick Faces

Brick faces blown off or crumbling away, exposing the softer core. On handmade colonial brick this is often just age and weathering. On later brick it is usually salt, trapped moisture, or a hard coating that stopped the brick drying out. Individual bricks get cut out and replaced; where a whole face has gone, the brickwork gets rebuilt.

Chimneys And Parapets Going At The Top

Original chimneys sit up in the weather with no shelter and are usually the most neglected brickwork on a house. Joints wash out, capping cracks, flashing fails, and water gets into the stack and runs down inside the wall. Repointing a chimney while it is still straight is a far smaller job than rebuilding one that has started to lean.

Leaning Brick Walls And Boundary Walls

Old brick boundary walls on clay get pushed around by the same seasonal movement as the house, but without the house’s weight holding them down and often with a tree beside them. Piers lean, courses crack and capping lifts. Most can be repaired in place; some sections need taking down and rebuilding on better footings.

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Your Bricks Were Probably Made In The Area

Bit Of Local Brick History For You

There is a reason this corner of Perth is brick rather than limestone. The clay was right here.

From 1927 until 1983, the Maylands Brickworks dug clay straight out of the Maylands peninsula, mixed it to a paste in a pug mill, pushed it through an extruder, dried the cut bricks in sheds that covered around eleven and a half acres and held up to 450,000 bricks at a time, then fired them in Hoffman kilns under a blanket of powdered coal. Robert Law and King Atkins set it up after an earlier venture at Helena Vale, and by the 1940s it was reckoned one of the most modern brick-making operations in the country. Its 1927 Hoffman kiln is the only one of its kind left in Western Australia and one of just five in Australia. One of the two kilns was damaged in the 1968 Meckering earthquake and later pulled down. The two clay pits it dug are now Lake Bungaree and Lake Bungana, and the site has been on the State Register of Heritage Places since the mid-1990s.

Why It May Relate To Your Home

That matters for your wall for a practical reason. Brick made locally from local clay in the twenties and thirties is not the dense, hard, uniform extruded brick a yard sells today. It is softer, more porous and more variable, which is exactly why it was laid in lime mortar and exactly why it does not take kindly to being pointed in cement or sealed with paint. Matching replacement brick to it is a hunt rather than an order — second-hand stock, the right colour range, the right texture, sometimes turning a sound brick around to put a good face out.

Go a few kilometres upriver and the building stock gets older again. Guildford was one of three townsites laid out at the founding of the Swan River Colony in 1829, alongside Perth and Fremantle, and it still sits on its original grid around a central square. Officially it is described as a highly intact nineteenth-century town, and most of its buildings date from that century. The brick there is older, softer and frequently handmade, and the mortar is a lime and sand mix with no cement in it at all. It needs a lighter hand and a softer mortar than anything built after it.

Two Councils, Two Very Different Sets Of Rules

This area splits across two local governments, and what you are allowed to do to your own wall depends on which side of the line you are on.

Guildford — City of Swan

Guildford/Mandoon is both a State Heritage listed place and a local Heritage Area, which means development approval is needed before works. The City asks owners planning demolition, an extension or a new build to book an appointment with senior planning staff before going any further.

Properties also sit in categories: on places of exceptional significance all works need approval, and a Heritage Impact Statement is required unless the work follows an existing Conservation Plan, while on places of considerable significance ordinary maintenance and repair can generally go ahead without approval and a Heritage Impact Statement is only triggered by major works.

Only Category 1 and 2 places from the Local Heritage Survey are on the Heritage List and automatically protected.

Worth knowing: owners of Category 1 and 2 properties may be eligible for a 50% residential rates concession. If you are not sure which category you are in, City of Swan statutory planning will tell you on (08) 9267 9267.

Bayswater and Maylands — City of Bayswater

Most homes here are character stock rather than listed places, and straightforward repointing or brick replacement is maintenance, not development. Some individual properties are on the City’s heritage list and a smaller number are State Registered — the Maylands Brickworks among them — and those do need approval.

We work to whatever the council requires and we are happy to talk to the planners on your behalf. What we will not do is start cutting into a listed wall on the assumption it will be fine.

Recent Work

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From First Call To Finished Wall

You call or send photos. Photos of the wall and a close-up of the mortar tell us a great deal before arriving to inspect. Often we can tell you on the phone whether it is urgent.

We come and look at it. On site we work out what is actually causing the fault rather than just what it looks like because a crack from seasonal clay movement and a crack from a rusting lintel look similar and need completely different work.

You get a written quote. Itemised, with what we are doing and why, and a note of anything we think can safely be left alone for now.

Mortar is matched before we start. Colour, texture and strength, tested against your wall. This is the step that decides whether a repair is invisible or obvious for the next thirty years.

We do the work and clean up. Dust-controlled cutting, drop sheets, and the site left tidy each day. Most jobs on a single wall are done inside a few days.

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FAQs For Guildford, Bayswater and Maylands

Get Your Wall Inspected Properly

Brickwork of this age rarely needs rescuing. It needs somebody who knows what it is made of and what the ground under it is doing. Send through a couple of photos of the wall and a close-up of the mortar and we will tell you honestly whether it is urgent, what it is likely to involve, and what you can leave alone for now.

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