Cornice Cement: Knauf Cornice Adhesive 45, 50, 60, 75 and 90, plus Pro Cove
Cornice cement, sold by Knauf as Cornice Adhesive, in grades 45, 50, 60, 75 and 90 and in Pro Cove 45 and 90, in 10kg and 20kg bags through all four South East Queensland branches.
Knauf Cornice Adhesive and Pro Cove Cornice Cement
A setting-type powder that is mixed with water and used to bond plasterboard cornice to the wall and ceiling. The grade number lets the fixer choose how long the mix stays workable, so a long run of cornice in a big room and a small bathroom can each get the grade that suits.
Listed in our stock system for all four branches. Pick-up from the counter subject to stock on the day, and site delivery across South East Queensland.
Specifications: what we stock
| Product | Code | Brand | Grade | Pack | Status |
|---|---|---|---|---|---|
| Knauf Cornice Adhesive 45, 20kg | CAN4520 | Knauf | Grade 45 | 20kg bag | Stocked |
| Knauf Cornice Adhesive 45, 10kg | CAN4510 | Knauf | Grade 45 | 10kg bag | Stocked |
| Pro Cove Cornice Cement 45, 20kg | PC-CC45 | Pro Cove | Grade 45 | 20kg bag | Stocked |
| Knauf Cornice Adhesive 50, 20kg | CAN5020 | Knauf | Grade 50 | 20kg bag | Stocked |
| Knauf Cornice Adhesive 60, 20kg | CAN6020 | Knauf | Grade 60 | 20kg bag | Stocked |
| Knauf Cornice Adhesive 75, 20kg | CAN7520 | Knauf | Grade 75 | 20kg bag | Stocked |
| Knauf Cornice Adhesive 90, 20kg | CAN9020 | Knauf | Grade 90 | 20kg bag | Stocked |
| Pro Cove Cornice Cement 90, 20kg | PC-CC90 | Pro Cove | Grade 90 | 20kg bag | Stocked |
Grades, packs and codes are read from our stock list. The working time of each grade is on the Knauf data sheet and the Pro Cove data sheet.
Ordering cornice cement? Count the cornice first.
The amount of cement follows the metres of cornice and the profile. Our guide to cornice sizes, lengths and how much to order works through the quantities, and the cornice profile guide covers the choice of shape. The cornice itself is on the cornice supplies page, and the finishing coats are on the jointing compound page.
Ask About Cornice Cement
Send the sizes and quantity and we will come back with the stock position at your nearest branch and a price. If it is urgent, calling the trade counter is fastest.
- Tell us the metres of cornice and the room count and we will help work out the bags.
- Cornice, cornice cement and jointing compound can go on the same order.
- Delivery to site across South East Queensland, or click and collect.
- Trade account holders get priority handling and account pricing.
Start Your Enquiry
Send it through our contact form and the trade team will come back with stock, sizes and a price.
- Grade and pack size
- Metres of cornice and the profile
- Your nearest branch and the site address
Your enquiry goes straight to the branch team. We use your details to answer it and nothing else. See our privacy policy.
What is cornice cement used for?
Cornice cement is the adhesive that bonds plasterboard cornice to the wall and ceiling. It is a powder mixed with clean water to a smooth paste, pressed behind the cornice and into the angle, and it sets hard. Knauf sells the product as Cornice Adhesive, and Pro Cove sells it as Cornice Cement.
Cornice is the moulded plasterboard strip that covers the join between wall and ceiling. It is cut to length, the back edges are loaded with cement, and the piece is pressed into place and held while the cement takes up. The excess is wiped off and the joints between lengths are filled and sanded, which is where a jointing compound takes over. Our guide to cornice profiles covers the shapes and sizes.
The name is the only confusing part. Trade counters, plasterers and builders all say cornice cement, while the Knauf packaging reads Cornice Adhesive. They are the same type of product, so a search under either name leads to the table on this page.
Which Knauf cornice adhesive grade do you need?
We hold Knauf Cornice Adhesive in grades 45, 50, 60, 75 and 90, and Pro Cove in 45 and 90. As a general rule a longer grade gives more working time before the mix goes off, and a shorter grade lets the job move on sooner. The Knauf data sheet gives the working time for each grade.
| Grade | Where it tends to be chosen | Packs we hold |
|---|---|---|
| 45 | Small rooms, short runs and repairs, where a faster set keeps the job moving | Knauf 10kg and 20kg, Pro Cove 20kg |
| 50 | Everyday rooms where a slightly longer mix time helps | Knauf 20kg |
| 60 | Standard rooms and longer runs | Knauf 20kg |
| 75 | Large rooms, long continuous runs and warm conditions | Knauf 20kg |
| 90 | The longest working time, for big open spaces and complex detail | Knauf 20kg, Pro Cove 20kg |
General trade guidance. The grade number reads as a set time in the BaseCote jointing range, and the Knauf data sheet confirms the working time for the cornice grades. Check it before you choose.
Queensland heat matters here. Mixes go off faster in warm weather and in rooms with no airflow control, which is why a fixer working on a summer job often moves up a grade. Work on one run at a time, mix only what can be used before the mix begins to set, and keep buckets and tools clean so old set material does not shorten the next mix.
How much cornice cement does a room need?
The quantity follows the metres of cornice and the profile, with allowance for waste, so the only reliable method is to measure the perimeter and check the coverage on the pack or the data sheet.
Our post on cornice sizes, lengths and how much to order sets out how to measure a room, how to allow for internal and external corners and how many bags a typical house uses. Send the metres and the profile to the trade counter and we will help turn that into bags, in the right grade and pack size.
Is cornice cement the same as jointing compound?
No. Cornice cement is an adhesive that bonds the cornice to the wall and ceiling. Jointing compound fills and finishes the joints between sheets and lengths. They are made for different jobs and should not be swapped.
Setting-type jointing compounds such as BaseCote share the minute-set numbering and the powder form, which is why they are easy to confuse on the shelf. Our guide to jointing compounds explains where each compound belongs, and the jointing compound page lists what we hold.
What do you order with cornice cement?
Order the cornice, the cement and the jointing compound together: cornice for the room, cornice cement in the grade that suits, and a compound for the joints and internal corners.
Plasterboard for the walls and ceiling, and the screws that fix it, are on the same order if the room is new. See the range of plasterboard types and the plasterboard screws page. The compounds and adhesives range lists the other products we hold.
How is cornice cement mixed and applied?
Mix the powder into clean water in a clean bucket to the ratio on the bag until the paste is smooth and free of lumps. Load the back edges of the cornice, press it into the wall and ceiling angle, support it while it takes up, and wipe off the squeeze-out before it sets. Follow the Knauf data sheet for the ratio and the working time.
The surfaces matter as much as the mix. The wall and ceiling should be sound, clean and free of dust, so that the cement has something firm to grip. Cornice that is cut square at the corners and dry-fitted before the cement goes on saves rework. Work one wall at a time, because a bucket that begins to set cannot be revived by adding water. Wash the bucket and tools straight after use, since set cement left in the bucket shortens the working time of the next mix.
How should cornice cement be stored?
Keep bags dry, off the ground and out of the weather, and reseal an opened bag. Use older stock first. A bag that has taken on moisture can set in the bag or behave differently when mixed.
Both the 10kg and the 20kg bags are powders, so humidity is the main risk in a Queensland summer. On site, stack bags on a pallet or a board inside the building, away from open doorways. Keep a spare bag of the grade you are using on site, so a short run at the end of the day does not hold up the job, and check that the bag you open is the grade you meant to mix.
Can one grade be used for the whole job?
Yes. Most fixers choose a single grade for a whole house, based on the size of the rooms and the conditions, and keep a second grade on hand for the hardest rooms. Order the grade that suits the majority of the work, then add a bag of the other for the exceptions.
A bathroom or a hallway with short runs behaves differently from a living room with a long continuous run of cornice. If a job spans both, ask the trade counter to split the order between two grades. Pro Cove 45 and 90 sit at either end of the range, which suits jobs with short and long runs side by side.
Where can I buy cornice cement near me?
Bayside Plasterboard supplies cornice cement through four trade yards across South East Queensland: Morningside in Brisbane, Chandler in the Redlands, Caboolture on the northside and Carrara on the Gold Coast. Collect from the counter or book a site delivery. Call (07) 3245 4488 to confirm what is on the shelf.
| Branch | Address | Hours |
|---|---|---|
| Brisbane (Morningside) | 367 Thynne Road, Morningside | Mon to Fri 5:30am to 4:00pm |
| Redlands (Chandler) | 3/1424 New Cleveland Road, Chandler | Mon to Fri 6:00am to 4:00pm |
| Northside (Caboolture) | 10 Piper Street, Caboolture | Mon to Fri 6:00am to 4:00pm |
| Gold Coast (Carrara) | 106 Eastlake Street, Carrara | Mon to Thu 6:00am to 3:30pm, Fri 6:00am to 3:00pm |
What drives the price of cornice cement?
Trade pricing is per bag and moves with the grade, the pack size, the brand and the quantity. The 10kg and 20kg bags are priced separately, and buying by the pallet changes the price again. We do not publish live trade rates because they move with volume and account terms. Send the grades and quantities and we will price them with your cornice.
Have the sizes, quantity and delivery suburb ready. Request a quote or call (07) 3245 4488.
Cornice Cement FAQs
Is cornice cement the same as cornice adhesive?
Yes. Cornice cement is the trade name and Knauf sells the product as Cornice Adhesive. Both are the powder that bonds plasterboard cornice to the wall and ceiling.
What do the numbers 45, 60, 75 and 90 mean?
They are the grade, which relates to how long the mix stays workable. The Knauf data sheet gives the working time for each grade, and a higher number generally gives longer working time.
What size bag does cornice cement come in?
We hold 20kg bags in all grades, and a 10kg bag of Knauf Cornice Adhesive 45 for smaller jobs.
Can I use jointing compound to fix cornice?
No. Jointing compound is for filling and finishing joints. Cornice is bonded with cornice cement, which is made to grab and set between the cornice and the wall or ceiling.
Which grade is best in summer?
Mixes go off faster in warm weather, so fixers often choose a longer grade such as 75 or 90 for summer work and large rooms. The data sheet gives the working time, and the trade counter can talk through your conditions.
What is Pro Cove cornice cement?
Pro Cove is a second brand of cornice cement that we hold in grades 45 and 90 in 20kg bags, alongside the Knauf range.
Do you deliver cornice cement to site?
Yes, across Brisbane, the Redlands, Moreton Bay and the Gold Coast, or collect from any of the four yards. Bags are heavy, so tell us where they need to land.