What is Selleys Fix & Go Bathroom & Kitchen, and where should you use it?

Selleys Fix & Go Bathroom & Kitchen is a ready-to-use sanitary grade silicone sealant for interior wet areas. It cures to produce a watertight seal and contains agents to resist the growth of mould and fungus, which is what "sanitary grade" is describing — a silicone formulated for the joints in a bathroom or kitchen, where standing moisture and organic residue would otherwise support a mould colony.

The practical difference from a standard cartridge product is in the packaging. Fix & Go comes in a squeeze tube rather than a cartridge, so you do not need a caulking gun. That makes it suited to a single joint, a repair, or a small job where setting up a gun is more effort than the work itself.

What the timings mean in practice

Two figures govern the job:

• The sealant skins in 5 to 10 minutes. All tooling has to be finished inside that window.
• It cures in approximately 72 hours. That is when the joint is finished, not when it stops feeling tacky.

The five to ten minute skin time is short, and it is the reason to work in sections. Run a length of bead you can confidently tool before it starts to set, finish it, then move on. Once the surface skins, drawing a spatula over it tears the skin rather than smoothing it, and the only fix is to cut the bead out and start again.

The 72-hour cure figure is the one to plan the room around. A shower or a sink that is put back into service before the sealant has cured is being asked to hold water with a joint that has not finished forming.

Where to use it

Fix & Go is stated to be suitable for interior wet areas — the bathroom and kitchen joints its name describes. It is a sanitary grade silicone that produces a durable waterproof seal and resists mould and fungal growth.

On plastics, the exclusion is specific: it is suitable for certain plastics, but not suitable for polyethylene, polypropylene or PTFE. These are low-surface-energy materials that silicone will not grip reliably, so a bead applied to them will release later regardless of how well it was tooled.

How to apply it

1. Clean and dry the surfaces before applying. Silicone will not bond properly to a damp or contaminated joint.
2. Remove the foil seal from the nozzle, replace the nozzle, and cut it at a 45 degree angle. Size the opening to the joint width — you can always widen the cut, but you cannot make it smaller again.
3. Squeeze the tube with steady pressure, making sure the sealant is pushed into the joint rather than laid across the surface. A bead that sits on top of a joint has almost no bond area and will peel.
4. Tool with a spatula dipped in soapy water before the sealant skins, which happens in 5 to 10 minutes.
5. Clean tools with mineral turps before the sealant skins.
6. Allow approximately 72 hours for the sealant to cure before putting the area back into normal service.

Limitations to observe

• Not suitable for polyethylene, polypropylene or PTFE. It is suitable for certain other plastics.
• Intended for interior wet areas. That is the stated application; it is not presented as an exterior or roofing product.

Selleys does not publish a technical data sheet for Fix & Go Bathroom & Kitchen, so there are no published figures for joint movement capability, service temperature, elongation, hardness, or the cure rate per millimetre of bead depth. Nor is there a published statement about paintability or suitability for contact with food or drinking water. If your job depends on any of those — a joint that has to move measurably, a benchtop food contact area, or a bead that needs to be painted — choose a product whose data sheet states the answer rather than assuming.

Getting a seal that lasts

Mould resistance is a property of the sealant, not of the joint as a whole. The agents in a sanitary grade silicone resist growth in the bead itself; they cannot stop a colony living on soap scum and residue sitting on top of it. Wiping the joint down as part of normal cleaning is what keeps that surface layer from establishing, and a bathroom that dries out between uses will not sustain much growth in the first place.

The other half of a long-lasting seal is what you do before applying. If you are replacing an existing bead, remove the old sealant completely rather than laying new silicone over it — new silicone does not bond well to cured silicone, and any mould in the old bead will grow through the new one.

Hazard classification

Classified as hazardous under Safe Work Australia GHS 7, with the signal word Danger.

• Eye damage — Category 1. H318: causes serious eye damage.
• Skin corrosion / irritation — Category 2. H315: causes skin irritation.

It is not classified as Dangerous Goods under the Australian Code for the Transport of Dangerous Goods by Road & Rail, or under New Zealand NZS5433.

What is in it

Chemical entity	CAS number	Proportion (w/w)
Acetoxysilane	4253-34-3	1–10%
Propanoic acid, calcium salt	4075-81-4	<1%
Non-hazardous ingredients	—	Balance

Eye damage at Category 1 is the line that matters, and it is a step more serious than most of the silicones near it on the shelf. Category 1 means damage that may not be reversible, which is why the signal word is Danger rather than Warning and why the first aid below is fifteen minutes of irrigation and an urgent trip to hospital, not a rinse and a wait. Compare with Wet Area Matt, a neutral-cure silicone for the same rooms, which carries only Category 2A eye irritation. The severity difference tracks the cure chemistry, not the application.

The acetoxysilane is that cure chemistry: this is an acetic-cure silicone, and the knowledge base describes the product as using acetic acid curing technology. It reacts with moisture in the air and releases acetic acid as it sets, which is the vinegar smell over the first day. Two practical consequences follow from the chemical class rather than from any statement on the data sheet, so treat them as informed inference: acetic acid attacks copper-bearing metals, zinc, and concrete and cement products, and it attacks the silvered backing of a mirror — so keep an acetic-cure bead off those; and a bathroom sealed with the door shut will hold that vapour, which irritates eyes and airways. Ventilate while it cures.

The page above notes that Selleys publishes no technical data sheet for this product. It does publish a safety data sheet, and that is where the substantive handling information lives — worth knowing if you were treating the absence of a TDS as an absence of published information.

The format is what makes the eye classification worth spelling out. This is a hand-squeezed tube, not a cartridge in a gun, used for one joint at a time in a confined bathroom, often kneeling with your face close to the work and often without gloves because the job is a five-minute one. A tube that unblocks under thumb pressure fires upward. Category 1 eye damage is the reason to put glasses on for a job that feels too small to bother.

The second declared component, calcium propionate, is present below 1%. Calcium propionate belongs to the preservative and mould-inhibitor class, which is consistent with the sanitary-grade mould and fungus resistance described on the page above — again, chemical inference rather than a sourced causal statement.

Protection

• Eye protection — safety glasses. The important one for this product.
• Gloves — nitrile rubber is indicated as suitable for intermittent contact; glove construction and site conditions vary, so make the final assessment yourself. Tool with a soapy spatula rather than a bare finger.
• Clothing — overalls and safety shoes in a workplace setting.
• Ventilation — ventilate the room while the bead cures; avoid breathing vapours.
• Wash hands before smoking, eating, drinking or using the toilet, and wash contaminated clothing before storing or re-using it.
• Storage — cool, dry, well-ventilated place out of direct sunlight, away from foodstuffs, incompatible materials and sources of heat or ignition. Keep the tube upright and closed.

First aid

Exposure	What to do
Eyes	Irrigate immediately with copious quantities of water for 15 minutes, holding the eyelids open. Remove contaminated clothing and wash the skin. Urgently seek medical assistance and transport to a hospital or medical centre. This product causes serious eye damage; do not wait to see whether it settles.
Skin	Immediately remove contaminated clothing and flush the skin and hair with running water. Keep flushing until the Poisons Information Centre or a doctor tells you to stop, or for at least 15 minutes, then get to a doctor or hospital.
Inhalation	Move the person to fresh air without becoming a casualty yourself. Remove contaminated clothing and loosen the rest, let them settle into the most comfortable position and keep them warm and at rest until fully recovered. Seek medical advice if effects persist.
Swallowed	Rinse the mouth with water. Do not induce vomiting. Give a glass of water to drink. Never give anything by mouth to an unconscious person. If vomiting occurs, give further water and seek medical advice.

If poisoning occurs, contact a doctor or the Poisons Information Centre — 131 126 in Australia, 0800 764 766 in New Zealand — with the container to hand. Selleys emergency line: 1800 220 770 in Australia, 0800 220 770 in New Zealand.

Common questions about Selleys Fix & Go Bathroom & Kitchen

Do I need a caulking gun?

No. It is a ready-to-use tube that you squeeze by hand.

How long do I have to tool the bead?

The sealant skins in 5 to 10 minutes, so all tooling must be done inside that window. Use a spatula dipped in soapy water.

How long does it take to cure?

Approximately 72 hours.

Is it mould resistant?

It contains agents to resist the growth of mould and fungus, and it is described as a sanitary grade silicone.

Can I use it outside?

It is stated as suitable for interior wet areas. For exterior work, look at a product intended for that exposure.

Will it stick to plastic?

It suits certain plastics but is not suitable for polyethylene, polypropylene or PTFE.

Can I apply it over an old bead of silicone?

Remove the old sealant first. Surfaces must be clean and dry, and new silicone does not bond reliably to cured silicone. Selleys Sealant Remover is made for that job.

What happens if I miss the tooling window?

Tooling a skinned bead tears the surface. Cut that section out and reapply.

Can I paint over it?

No paintability information is published for this product. If the joint needs to be painted, choose a sealant whose data sheet states that it is paintable.

Is there a technical data sheet?

No technical data sheet is published for Fix & Go Bathroom & Kitchen, so figures such as joint movement capability and service temperature are not available.

What if mould has been a recurring problem in the joint?

Look at No Mould Silicone Sealant, which publishes a full technical data sheet, or compare the options across the wet area silicone range.