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Answers to frequently asked questions about Liteblok™ and our Cresco™ Precast Fence Systems are provided below:

Liteblok

What is the price of the blocks?
What is the R value of Liteblok™
Is Liteblok load bearing?
Why is Liteblok™ a green building material?
Do the gaps between blocks need to be filled?
Can Liteblok™ be used for stem walls or below grade?
If I chase a Liteblok™ wall to run electrical wiring, will that compromise wall strength?
What is the wind rating for Liteblok™?
Are special tools, fasteners or finishes required?
Is installation guidance provided?
Can curved or angled walls be built?
Are Liteblok™ walls prone to cracking?
What stack rates should be expected with Liteblok™?

What is the price of the blocks?

We price our blocks such that our built wall costs, that is, the cost of all materials and all labor to build an unfinished wall, is competitive with other similarly performing wall systems on the market such as SIP, AAC and ICF. When comparing wall costs, one should always add up the costs of all components (including labor) that make up a wall - never compare just one component such as a block. Keep in mind that wall costs typically represent less than 15% of total house cost. See Understanding Wall Costs for more information or Contact Us for a current price sheet.

What is the R value of Liteblok™?

The energy efficiency of wood framed structures is typically gauged by R value - a measure of thermal resistance. High thermal mass wall systems such as Liteblok™ are recognized by the International Energy Conservation Code (IECC  - energy codes obtained from the ICC) as contributing to energy efficiency not only by their thermal resistance but also by their thermal capacity or ability to store energy. The IECC recognized this by creating the equivalent R value system to allow apples-to-apples comparisons between different wall systems and to allow builders to size A/C equipment appropriately. Equivalent R value is a climate dependent value. For Liteblok™ 38 Grande, examples of equivalent R values (based upon 2003 IECC) are provided as follows: Austin, TX -- R-35, Charlotte, NC -- R-28, Denver, CO -- R-17. Energy efficiency can be further improved by, for example, employing double blocked walls, adding more insulation, or using a thermal barrier coating. The learn more, ask your construction professional or ICC or Contact Us.

Is Liteblok™ load bearing?

Yes, Liteblok™ walls are load bearing. Unlike many systems on the market, interior Liteblok™ walls are also load bearing thereby reducing roof spans and lowering construction costs. Although Liteblok™ walls are load bearing, the blocks themselves are not structural, they are forms containing the structural elements. An analogy can be made with wood frame construction. The blocks function like the pink fiberglass insulation within a wood frame wall while the columns of grout and rebar within the blocks act like studs in a wood frame home. For home and building construction, Liteblok™ 38 only needs to have enough strength for handling purposes. For outdoor applications such as fences and retaining walls, Liteblok™ 69 is the better choice. It is a harder block that is more resistant to the abrasion outdoor structures are exposed to. Liteblok™ can be used to build structures up to three stories high. The larger Liteblok™ Grande is suitable for five storey structures. The forms can also be used as space fill/ insulation in high rises and sky scrapers.

Why is Liteblok™ a green building material?

  • Durable, long lasting structures can be built. This results in less waste and less energy cost to society
  • Energy efficient with very high equivalent R-values and smaller A/C systems required
  • Lightweight (density as low as 1/4 that of traditional concrete) means significantly less sand and cement is consumed contributing to a lower embodied energy than all other similarly performing building materials
  • Liteblok™ does not rot, is not attacked by vermin or termites, is mold and mildew resistant, and does not absorb moisture into its core resulting in less maintenance and less waste generated through maintenance
  • Liteblok™ contains no VOCs or toxic substances such as fly ash and polystyrene. No ozone depleting or hazardous chemicals are used during manufacture. Heavy use of pesticide is not required prior to installation. It is a very clean breathable building material that offers excellent indoor air quality
  • Modular system results in minimal job site waste
  • Liteblok™ can be recycled at the end of its life
  • Its light weight means reduced freight loads and less energy consumption and pollution during transport
  • Sound absorbing qualities results in significantly reduced indoor noise

There is a common misconception that materials need to have recycled content in order to be green. But this is not the case. Green materials minimize their carbon footprint, are non-toxic and non-ozone depleting and reduce noise pollution. Liteblok™ excels in all characteristics of what is considered a green building material.

Do the gaps between blocks need to be filled?

Yes, they must be filled to prevent rain from getting between the gaps. Grout or plaster is usually used to fill the gaps between the blocks.

Can Liteblok™ be used for stem walls or below grade?

Yes, it can. However, it is dependent upon the lateral loads against the wall. Lateral strength can be improved by increasing the frequency of the reinforced columns and bond beams, through the use of buttresses and by other means. It is best to consult with a competent structural engineer to determine your options.

If I chase a Liteblok™ wall to run electrical wiring, will that compromise wall strength?

No, it shouldn't. Remember that Liteblok™ is a form that contains the structure. Just avoid cutting the steel reinforced columns and beams.

What is the wind rating for Liteblok™?

Liteblok™ is just one component of a wall system. By applying a variety of reinforcing methods structural engineers can design a structure meeting all the wind and seismic load requirements found in the United States. Reinforcing methods include, but are not limited to, increasing the size and frequency of steel reinforcement, employing buttresses, using double walls, and reinforcing the space between double walls.

Are special tools, fasteners or finishes required?

No special tools are needed. You can find suitable fasteners for Liteblok™ at your local hardware store. However, there are fasteners specifically designed for aerated concrete (see Fischer) that are easier to use and better performing. Special finishes are not required for Liteblok™. Generally, any finish that will work with a masonry wall will work with Liteblok™. Stucco, plasters, veneers, brick and siding will work with Liteblok™.

Is installation guidance provided?

Verbal and written technical assistance is provided before and after the sale.

Can curved or angled walls be built?

Liteblok™ can be cut to create curved walls. Angled walls can be created by re-starting a wall at any desired angle.

Are Liteblok™ walls prone to cracking?

Liteblok™ walls are resistant to cracking. The gaps between blocks act as a multitude of expansion joints keeping any stress generated cracks from spreading.

What stack rates should be expected with Liteblok™?

Typical block stack rates are 120 and 40 blocks per person per hour for Liteblok™ 38 Standard and Liteblok™ 38 Grande respectively. This includes the preparation and placement of rebar and grout, the application of mortar on the first course and the installation of bond beams and lintels.

 

Cresco Precast Fence Systems

Does Cresco install fences?
What is the cost of an installed fence?
Why are the Litecast fences considered a green building material?
Can the fences be used below grade or as retaining walls?
Can the fences withstand hurricane force winds?

Does Cresco install fences?

We do not install product, we are strictly a manufacturer. We work with a network of independent contractors and can refer them for installation.

What is the cost of an installed fence?

The costs of a precast concrete fence is typically several times that of wood. For example, depending on the length, style and finish of fence, an installed six foot fence can range in price from $40 to $90 per linear foot. Contact Us to learn more.

Why are the Litecast fences considered a green building material?

  • Lightweight aerated panels use less sand and cement and have a lower embodied energy that other precast fence systems.
  • Lightweight means reduced freight loads and less energy consumption and pollution during transport
  • Modular system results in minimal job site waste
  • Unlike regular concrete which reflects sounds, the sound absorbing qualities of these panels result in less noise within enclosed spaces
  • Contains no ozone depleting or hazardous material

Litecast™ fences are the only sound absorbing decorative fence system on the market.

Can the fences be used below grade or as retaining walls?

Premocrete™ and Litecast™ panel and post fences can be used below grade and as retaining walls but with limitations. Please Contact Us to discuss your specific requirements

Can the fences withstand hurricane force winds?

Our fences are all designed by engineers to resist hurricane force winds. Drawings are available which show the wind resistance rating and how the fences should be constructed and installed to meet requirements. Fence design and installation can be modified to meet even higher wind resistance requirements.      

Like to learn more about our products? Visit Products. Have questions, need help determining quantities, or looking for a contractor or professional? Contact Us. Ready to buy? Visit Where to Buy.

Toll Free  1.866.491.6819

Email  info@crescoconcrete.com

 

 


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