The best solution will depend upon the suburb in which you live. Higher R-Ratings are required in the Adelaide hills due to the colder weather. Most suburbs in Adelaide will need ceiling insulation of approximately R3.5 or R4.1 ratings, while walls need R2.0 or R2.5 insulation. Higher ratings for insulating existing brick veneer or double brick walls are achieved with water repellent cavity wall Rockwool (see Insulation for existing walls)
This is a measure of the thermal resistance to heat transfer (http://en.wikipedia.org/wiki/R-value_(insulation)). The higher the rating, the better the insulation, up to a point. We ensure we give you options that meet or exceed the current Australian Standards
We unfasten sections of the roof or move tiles and insert a flat hose to the bottom of the cavity. There is a normally a gap of approximately 50-75mm between the timbers and the brickwork, allowing us good access. The pump mounted in our truck is activated and as the cavity fills with Granulated Rockwool, the hose is slowly lifted up from the bottom. We repeat this process all along the wall.
How do you insulate clad homes, or internal walls?
There will be a summer and winter benefit of 3-6 degrees in most homes by insulating the walls correctly. This will help reduce energy bills and make the home much more comfortable. It also helps reduce noise penetration
When is it best to use blow in ceiling insulation?
Blow-in ceiling insulation is best for roofs with difficult access, such as when the roof is raked, flat or very low. It is also very good for homes with ducting, as it means the installers can get to all the tight/hidden nooks or crannies successfully.
Are there different types of blow-in ceiling insulation?
We use a specially designed truck mounted pump that allows us to efficiently pump insulation into all parts of the ceiling. If it is very low, we will do the work from outside, by lifting tiles or iron.
Removal of old Insulation
Do you recommend cleaning the ceiling out before installing new insulation?
If your ceiling has old and/or deteriorated insulation, we recommend cleaning prior to installing new batts, as this will give a better thermal result. Alternatively, we will blow insulation over the existing material, filling in all the gaps, etc
We use a truck mounted vacuum machine to remove loose insulation and dust. We will remove batts first (if there are batts present originally, and then we vacuum the ceiling). Loose insulation is just vacuumed up with our hose, directly to our truck. The truck will operate successfully between 10-50 metres from the house. We then take the old insulation, dirt and dust away and dump it.
What materials can you suck out with your machine?
We can remove old cellulose, rockwool, dirt and dust, seaweed, sea grass, sawdust, sheepswool, and old styrene. We remove batts by hand first, then vacuum the ceiling to get rid of the remaining loose dirt and rubbish.
We normally access the ceiling by lifting iron or tiles, so that there is no dirt or dust going inside the home. If there are old degraded batts, we fit them into large bags, seal the bags and place them in our trailer, before we commence sucking out the dirt,etc. If loose material is beiong sucked out, that is also done through the roof.
What happens if I lay batts on top of the old batts or loose insulation?
Batts rely on neat fitting with no gaps, and need to be held in snugly between the joists to achieve their proper R-Rating. It is very hard to do that if the batt does not fit neatly down on the ceiling, and you may not achieve the stated R-Rating.
Does it matter if there are some gaps left when fitting batts?
It is very important to ensure no gaps are present. Even if only 5% of an area of wall or ceiling is left un-insulated, then up to 50% of the potential benefits may be lost. Blow-in insulation may be a better option if the roof is too difficult to correctly insulate.
Do you have to take the whole roof off to put insulation in?
In most situations, we will remove a small section of the iron or tiles and insulate the roof from that spot. If it is a flat roof, we may need to take more roofing off, depending upon the product selected. Our qualified personnel ensure that the roof is correctly re-fitted before we leave the job. Alternatively, we come in through the manhole inside if that is practical.
A standard 3 Bedroom home should take approximately half a day to insulate the ceilings. Larger homes or homes with flat roofs will take longer. Removal and replacement is 1-2 days, while existing walls can normally be insulated within the day
The insulation we use has low allergen content and does not contain hazardous air pollutants or ozone-depleting substances. Bradford insulation products are the only insulation products endorsed by the National Asthma Council Australia’s Sensitive Choice program.
Steel Framed homes for Batts or Blow-in???
Which is the best product for the ceiling of a home with steel framing in the roof?
All standard ceiling batts are made to suit timber framed joists, and most of these joists are 560mm gap, with batts of 580mm wide. However, steel framed ceiling joists are often a C-section, with a gap of 590-600mm. This causes problems for achieving the correct fit for batts. In this situation, blow-in material may be a better option, as it will fill all gaps correctly. Many steel framed roofs are quite low, with numerous cross beams that may cause a problem for installing. It is generally important to inspect the roof closely for a steel framed home.