Fire Protection Systems

Separating 2 x Units with a Firewall

 

As you can see from the bottom right hand picture, when we first pulled down existing ceiling, there is a gap between the top of blockwork and the top of the roof structure.

The purpose of building a firewall is to fill in this gap to protect each unit individually from each other. So if a fire starts in one, it has protection from the fire spreading to the adjoining unit.

As plasterers we have trained and are qualified to build these life saving walls.

You might see in some of these pictures below, the firewall protrudes out from the main flat firewall. Why you might ask? Well this is because the timber on those beams runs through to the unit adjacent, so therefore if we didnt sheet these timbers out this far and caulk them with the approved fire mastic(see below), then the fire would simply burn the timber through the flat firewall and continue burning on into the next unit on the other side of the blockwork wall.

The distance these timbers are to be sheeted and caulked is 600ml from main wall. This is the Australian Safety Standard we must use when constructing fire rated linings.

You can not see in these pictures but there is also special insulation called Fire Seal, that has also been installed along the top of the fire sheets for extra protection, and in any gaps that need insulating also.

The fire sheets used here are 16ml thick, quite heavy and awkward to cut. But thats a perk of the job, lol.

To prevent fire spread, all screw holes and any gaps have been sealed by approved fire mastic. This stops air getting through and smoke also.

Installing these walls is tedious, takes a lot of time, can be difficult at heights and is heavy work when constructing long and high walls(especially on scaffold). But with all that said it can be very satisfying too, as being the tradesman tasked with building it, you know that potentially the firewall you are building may just save someones property an even more importantly someones life, which makes all the work worth it.

Regards

Phil

http://www.philthecracks.com

 

 

 

Installing Plasterboard.

PLASTERBOARD FIXERS

Just wanted to publish these photos so i can explain the importance of installing plasterboard correctly.

This job my team troweled and finished off recently shows joins running both ways in the ceilings and on some walls.

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The reason for this is the plasterboard fixing was not done correctly. It was actually hung the opposite way.

This created a problem in that we had to trowel full length butt joins, the full ceiling width, when really none should have been there in the first place. There was also some of these full butt joins running vertically down the walls in some areas aswell. These are extremely hard to hide from glancing light, but luckily my team posess the skills and knowledge to do just that.

Now of course this saved the owner money as we only had to trowel this place up, but you must consider when attempting to plaster your own jobs this, it took my team longer than usual to finish this beacuse of all the extra joins we had to trowel and eventually sand. And not to mention the joins themselves needed to be cleated as they were hanging down loosely which means if we did not fix this the joins would eventually crack later down the track.

So with all this extra work we peformed to fix this, did you really save yourself that much money. Just something for you ponder on the next time your thinking of doing your own plastering works.

Anyway, this job has come up well and the owner is over the moon, and not that you could tell now but this used to be a metal framed shed.

Regards

Phil

http://www.philthecracks.com

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Top Plasterer Award. Launceston

Home Improvement 2day awarded my team as one of the Top 25 plastering companies in Launceston. Great work boys.

Phillip Cordwell

Owner/Operator

Phil The Cracks Plastering

Ornate Cornice and Ceiling Roses

Specialist Ornate cornice installed here. The bottom right cornice is 300ml in size and the bottom left cornice is 450ml wide. Very heavy stuff. The ceiling rose at the top is 660ml in diameter. The team did a fantastic job on this 187 year old house near Avoca Tasmania. Very proud of them all.

 

Plastering The Examiner Reception Area

This is the new Examiner newspaper reception area in Launceston. Sheets here are standups as the builder framed the walls to allow this to be done. Great effort by the PTC team to get this finished off fairly quickly.

 

Complete House Plastering. Bicheno

This is a rondo suspended ceiling on a raked angle from 3m down to 2.5m. Because usually 10ml plasterboard is used in residential housing, these metal battens, called furring channels are spaced at a maximum 450ml centres to comply with Australian Safety Standards. The blue colour board you can see in the background is for the bathroom, it is called “wetboard”, and is commonly used in any wet environments.

Image may contain: indoor

 

This is the finished sanded product. The angle you are looking at now between the wall and ceiling junctions was created using an adjustable PVC splade bead. This bead was then coated 3 times. 2 x base coats and 1 x top coat, this is also to comply with CSR Gyprocks warranty standards, trowelled any other way would void your warranty.

Image may contain: indoor

Image may contain: indoor

How To Install 6m Plasterboard.

Plasterboard Installation / Ceilings

Well then. You have become brave and decided well i can save some money here if i sheet my 12m lounge room ceiling myself. But your probably wondering well what do i need to do to install it correctly. Well here is some simple advice i hope helps you along the way. Firstly you need to measure you room and work out all the sheets you need to get, remembering the biggest plasterboard sheet size you can get is 6m long.

Once you have worked out how many sheets you need, you will then need to think about labour, as in how many friends you will need to get it done. If you have a plasterboard sheet lifter like the one pictured below, then you can get away with sheeting your ceiling with you and your mate. If you do not have one of these machines then the minimum you will need is 3 people, but 4 is recommended. You can how ever hire out these sheet lifters for around $50 a day so that is not bad value really compared to your mates wanting a carton of beer each and a free barbie.

Now to the sheeting part. Usually you will start against a back wall, never in the middle, sometimes you have too, but usually against a back wall. If your finish is a square set finish it is advised to take of the 50ml recess on the edge of the first sheet when you start, thus making your first sheet 1150ml wide and not the regular 1200ml. If it is cornice then you do not need to worry, as the cornice will cover the recessed edge. Before you throw up your first sheet you need to glue it with a product called Stud Adhesive. You can see some i installed on the ceilings below. Now the stud adhesive is placed on at 200ml, 400ml, leave the centre then 800ml and 1000ml. Look at the picture below to get a better understanding. The reason we do not glue the centre is because that is where we will be screwing the sheet, 2 x 25ml screws either side of the 600ml line. If i was to put glue there and then screw in the same place it would cause problems because as the glue drys it pulls the sheet harder to the battens and will pull the head of the screw through the paper faced plasterboard.

Now also if your room is longer then 6m you will need a butt join, that is where the ends of 2 sheets meet together in a ceiling or wall. Now as you can see, my example sheet below stops halfway between 2 metal ceiling battens(these battens are installed at 450ml centres for 10ml sheet and 600ml centres for 13ml sheet), the reason for this is so the ceiling can be backed blocked (will explain this in a later post) so it pitches up where the join meets. This allows the tradesman to trowel the butt join back to a flat level later. You will have to measure the plasterboard to make sure it does stop between 2 battens because it does not always work out that a full 6m will land in that position.

Now once its glued and cut to the right size you can throw the sheet up making sure you screw with 25ml screws for 10ml or 32ml screws for 13ml sheet, both ends of the sheet on each batten and 2 in the centre on either side of the 600ml line. Now this is the way its done in Hobart, Devonport and Burnie, but in Launceston it is screwed another way, but this way is fine, less sanding later.

Just one last thing. When sheeting ceilings that are bigger than 6m long, make sure that butt joins are staggered at LEAST 600ml apart from the previous sheet, you can have them inline if there is a 1200 sheet between them but sheets next to each other must be staggered minimum 600ml to make it easier to hide the joins when trowelling.

Ok, now you know how to throw up 6m long plasterboard sheets, enjoy and have fun with it, it is heavy work but it is not impossible for you to do on your own and save yourself 1000’s of dollars in the process. #plasterboard

Regards

Phillip Cordwell

http://www.philthecracks.com

note: photos below were taken at Sorell Springs near Oatlands at a sheep station cottage called Brooklands. Hi Jack 🙂