Blue board render cracks

We ensure that there are no uneven lines or cracks which could result in leakage. Even villaboard will develope cracks if fibreglass mesh tape is used. We are able to perform the acrylic render of this surface as part of the procedure for installing and rendering these foam panels. Most commonly used as an external wall cladding, blue board is a strong based 7. Stepbysteps instructions on how to install blue board rigid insulation panels over osb. However there are a number of problems that could arise with cement particle boards if not fitted properly or if the incorrect render system is applied over it. Dont do render on blueboard, it only looks good in first few months, later it cracks and looks terrible when sun hits it from side. Use for jointing fibrecement sheet or blueboard prior to rendering. Can you please tell me why the render on our blueboard facade has cracks where each join is. Hardies fibre cement is resistant to fire, termites, rot and damage from moisture. Anyone know of a blue board manufacturer or whos responsible for meshing the joints before applying the render. Get a few bags of render it from the hardware and a good set of elbow length rubber gloves. The finished walls will be rendered, i know i would need mesh when rendering polystyrene but is it required for blue board or aac panels. Manufactured by james hardie for more than 20 years, hardietex blue board base sheet is the original blue board fibre cement cladding designed for the application of a third party specialised 2mm thick acrylic texture coating.

We work closely with you to define your requirements, budget and the look that you aim to achieve. Blue board and green board are both designed for use in applications where regular drywall wouldnt be sufficient. Acrylic renders are especially suitable for application over fibre cement blueboard. Blue board bottom edge and a little on the side needs to be refixed to the studs and a couple of small cracks. Blue board is exactly that, boards that can easily move and are flexible to some degree. The important thing for a high quality polymer acrylic render job over your blueboard or harditex base sheet is to get your joints flat to provide a nice smooth surface for your finished coats. Mind you the manufactures have not come up with a better jointing solution yet. Print this page how to render blueboard or fibre cement sheeting. The joint are starting to crack everywhere with splits of about 24 mm. I was looking at the render on the side of the house over the weekend and thinking that it might be time to do something about it. How to repair cracks in rendered or stucco walls permanently render crack repair kit if you need to affect a render crack repair, we have assembled a kit for you at a discounted price, just click this link. I opted for blueboard cladding as i wanted a better look than weatherboards, but still wanted to do it myself. We are a highly reputable company offering innovative rendering services for residential and corporate customers, at competitive prices.

Problems with cracking render on a building or house. Original builder rendered all external walls over blueboard. Keeping on top of brickwork and render maintenance is an essential task. The handwriting of the artisans, the taste of the original occupants, and the evolving styles of decoration are embodied in the fabric of the building. Blue board is a very common material particuarly for upper storey and infill applications as it is light weight compared to brick work. Rockcote polymer renders are highly crackresistant and can be used in. I was going use textured paint to give a rendered effect, but after researching sites such as the blueboard makers hardie and watching a. Do you think there is any way we can patch it or do we have to go the expens. Now 5 months down the line the rendering has started to crack again, we have tried filling them but more keep appearing.

Can be trowelled then floatedsponged straight away at 12mm. Blue board is for walls that will be finished with veneer plaster. Top 10 professional blueboard installation services in sa. There are a wide variety of new render systems designed not to crack and to be flexible and breathable. I have read that i should leave an expansion joint between the render on the two materiels, like dragging a nail through it from top to bottom to stop cracks. Cracking blue board join movement or render problem. Sounds like no tape was applied, the plasterer may have filled bits in with adhesive and not taped the joints where the board and adhesive meet, i would get them back in to do it properly they should tape the full wall with some 1 metre wide fiber tape and replaster to sort it out. Applying cladding render to the blueboard i had installed on my steel kit home, was not my first choice.

I want to try and make the whole wall look the same. View topic help blueboard wall is cracking up home. All on the second story and all walls are rendered. Adheres to bushfire attack level requirements to bal29. Vinly cladding or blue board with render somersoft. Would you recommend the stud adhesive or something like sikaflex pva. Intended to make the house look nice and fancy over the short term, but will never last. Once it cracks you cant fix the crack, you have to render the whole wall again. Even if the joins were covered with fibreglass tape etc. Its an extension done in blueboard and the render has cracked on all of the blueboard joins. Dunlop render joint and patch is a twoinone formulation suitable for jointing fibrecement sheet or blueboard prior to rendering as well as patching cracks and holes of existing render to a depth or width of up to 5mm. If you need to affect a render crack repair, we have assembled a kit for you at a discounted price, just click this link.

It does not have the ability to withstand shrinkage, weather erosion and movement of the property. I was going use textured paint to give a rendered effect, but after researching sites such as the blueboard makers hardie and watching a few youtubes, i thought i would give it a go. I would ruff bag it as i have found that process is a lot cheaper than render paint. The original blue board for fibre cement rendered walls. Cracks in external render screwfix community forum.

Blue board is an excellent material which can be used for interior and exterior walls. And because they are boards, they are prone to wind compressions caused from opening, closing windows and doors. I have worked with blue board over the last few years and have tried different methods for finishing the product. Top 10 professional blueboard installation services in. Dunlop render joint and patch is a twoinone formulation suitable for jointing fibrecement sheet or blueboard prior to rendering as well as patching cracks and holes of existing render.

How to apply blueboard cladding render kit home basics. From modest farmhouses to great buildings, regardless of the ethnic origins of the occupants, plaster has traditionally been used to finish interior walls. Is it the builders job to seal the joints before rendering or the renders. Hairline cracks in external render painters pit stop. You only use mesh on blue board, foam type structure, which should be done in a poly, not washed sand, which makes me think he has done it in sand and cement, which would be why he was straight edging it. Bob joins plastering contractor bob fragakis, who will install blueboard, then apply a skim coat of plaster over it. Acrylic renders are especially suitable for application over fibre cement blueboard and painted substrates where tolerance to movement and good adhesion must be considered. Acrylic texture coatings need to be applied to a prepared flat even surface either being of cement render, concrete, blueboard,rendered polystyrene panels. Fire rating up to 60 minutes when used with hardiesmart wall systems. It has a very fine texture so once you put it on and get it reasonably flat with a trowel wait for it to almost dry then smoothe it off with a wet spounge.

Render cracks posted by rado thanks for replying so quickly rado. Both sides are flat to give a brick wall appearance. You need expansion joints because blue board is not hard like bricks and cement render. Blueboard and veneer plaster offer superior quality as well as a traditional look that many homeowners favor. I have blueboard on my own house that has the odd hairline crack as well. Use as a patching mortar for repairing cracks and holes in existing. A fibre cement broad wall solution with a textured finish to give the look of a rendered wall without the weight or. If the blue board is butted up against something and you need to fill a small gap then maybe you could use a flexible paintable silicon, should be water tight so wont wash away, just be sure it says paintable on the tube. Cement particle boards or render boards are normally fitted on timber frame builds and then the rendering is normally carried out over the board. Sand cement render will always crack no matter what methods or steps taken. Rendering cement sheet and blueboard walls with rockcote. Over the years, we have gained a reputation for providing customers with high standards of service, efficiency and professional advice.

I have used blue board sheeting for cosmetic purposes and it works a treat. Do you think there is any way we can patch it or do we have to go. Blue board is designed so anything will stick to it including polymer renders and paints. Acrylic renders come in different finishes and forms such as coloured and non coloured giving you a plethora of options when it comes to coating your blue board. Apr 23, 2016 had a similar problem a few summers back with hairline cracks on smooth render although mine was not painted, i just mixed up a bucket of sand and cement applied it to the render on a sponge in a circular motion essentially filling in the hair line cracks, you might think it looks a bit of a mess but by doing this but found it blended in well. Dunlop 4l premix render joint and patch bunnings warehouse. It will be a large job to fix as its the whole house. Rockcote acrylic polymer renders are pre mixed, 100% acrylic based renders designed to be flexible and lightweight. Hardietex blue board base sheet can also be used as bracing. There are numerous reasons as to why cracks can open up in new render. Is the purpose of this board to render the whole thing or do you just do the joints and then paint it. Blue board most commonly used as an external wall cladding, blue board is a strong based 7. The estimate provided above should be used as a rough guide only.

Clean surface down with a soft haired broom to remove all dust and dirt. We recently had our whole house rendered over pebble dash, we had a few problems of crazy cracking on one wall which is south facing, the builder redone this wall again. Rendering over cement particle boards external rendering. How to render blueboard or fibre cement sheeting cement. I am looking at cladding the internal walls of my balcony might use for exterior also with either blue board, aac panel, or polystyrene and just wondering the benefits of each, which are less likely to crack. It is easy to fix and i have not had any problems with cracks at the joins yet. High in volume solids, displays minimal shrinkage and has excellent crackbridging properties. Had a similar problem a few summers back with hairline cracks on smooth render although mine was not painted, i just mixed up a bucket of sand and cement applied it to the render on a sponge in a circular motion essentially filling in the hair line cracks, you might think it looks a bit of a mess but by doing this but found it blended in well. Solution mix a small amount of cement and water into a paste, apply using small brush or finger to fill cracks then as required paint when dry. Also the dynamics of the substrate what is underneath the texture i. The oven is a firebrick barrel with solid reds for the dome and i wanted to have a shaped render layer rather than a boxed in oven.

If subsequent coats of render are to be applied, the surface should be raked or scratched within 30 minutes of application to provide a rough surface to aid the adhesion of any subsequent coat. Blue board, is a strong, preprimed base sheet that is finished onsite with a specialised acrylic render texture coat system, which includes joint reinforcement with resistant fiberglass mesh, acrylic render based polymer render over the entire wall. Cracks appear in rendered walls of buildings because the ground actually moves, and the building actually moves, and with time and the wetdrywetdry. Render finish over fc sheet is a bad idea from the getgo. Feb 01, 2012 sound at the end, here i have a job where all the joints had cracked so i repair, using the correct materials and my own best meathod i make the job look like new. Do you think there is any way we can patch it or do we have to go the. A simple but highly effective method for giving a solid, rendered masonry look to your fibre cement sheet and blueboard projects. A minimum of 3 days must be left between coats to allow the render to develop maximum strength and prevent shrinkage cracks. We are independent surveyors who can provide help and advice. Cracks appear in rendered walls of buildings because the ground actually moves, and the building. Adtex pty ltd for blue board applications can give no guarantee. Fragakis explains the tools and materials used to smooth the plaster, deal with.

Given that the external walls of your house are performing two vital functions. The other specialized wallboard product green board is intended for use in. Available in a range of different sheet sizes, blue board is now a very common fencing material, and used often in courtyard. Our blue board cement board needs to be re cement rendered is it 6m long x 3. Blue board must be glued and screwed at 150mm spacing with gal. Rockcote acrylic polymer renders are pre mixed, 100% acrylic based. How to install external blueboard cladding kit home basics. Blue board cracks because fibre glass mesh tape just doesnt cut it. The wall will go from red brick house to blue board or fiber cement garage. Rendering sydney jims rendering sydney 0410 744 307.

Gday, looking at buying a house with cracking evident in the render appearing in the blue board joins. Gunnail to timber frames or screw to light gauge steel frames. Render dried out too fast due to an excessively hot day, thin coat of render or wall was very dry and sucked out all the moisture in the render too quickly. They had a recess on each long side to aid jointing, and were meant to give the monolithic rendered look. If you need help and advice with cracks in render that could be hiding structural problems or render that has fallen off the building which could be allowing dampness into the property please free phone us on 0800 298 5424 for free, friendly advice. How to render blueboard or fibre cement sheeting cement australia. They are also through coloured so you will not have to paint ever. The important thing for a high quality polymeracrylic render job over your blueboard or harditex base sheet is to get your joints flat to provide a nice smooth surface for your finished coats. Expert advice from bob vila, the most trusted name in home improvement, home. Repairing historic flat plaster walls and ceilings old. Dec 19, 2018 plaster in a historic building is like a family album.