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What kind of fire rating does stucco provide?
Portland cement-based plaster, commonly called stucco, has long been and continues to be a popular choice for finishes. It allows for a wide expression of aesthetics, is a cost-effective finish, is durable in all types of climates. Especially Southern California, and offers fire resistance. Fire resistance is typically classified by a fire rating, but what kind of fire rating does plaster provide?
Things that influence the fire rating of a plaster system include the type of material used for the support member. The size of the support member, presence/absence and type of exterior sheathing, aggregate in the plaster mix. A presence/absence of insulation, presence/absence of interior wall finishing materials (gypsum wallboard, etc.) and thickness of the section. The type of member—wall, partition, ceiling, or other, and member classification (load bearing(LB) or non-load bearing (NLB). This can influence the rating.
In 1991, the Foundation of the Wall and Ceiling Industry published a reference guide on portland cement-based plaster/stucco. The systems used for fire protection, the Single Source Document on Fire-Rated Portland Cement-Based Plaster Assemblies. Designers, specifiers, building code officials, contractors, and general public are the intended audience. The information contained therein is “not intended as design or installation criteria,” but can help people determine how to assess.
For example, a typical residential application might be a three-coat system of plaster over 2-by-4-inch studs. Using metal lath attached to the studs, either with or without a layer of sheathing, like plywood. On the interior side would be a layer of gypsum board. The detail for a system made with these components is assigned a one-hour fire rating based on 1988 UBC. Also known as Uniform Building Code information.
If you have additional questions about stucco on your home, please give us a call at (619) 561-7429. Or contact us through our web Contact Form. We strive for 100% customer satisfaction and are consistently rated A+ by the San Diego BBB. As well as receiving consistently high ratings from our Home Advisor and Yelp customers.
What is the correct thickness of stucco?
Stucco thickness depends on the backup system and on whether or not lath is present. In ASTM C926, the Standard Specification for Application of Portland Cement-Based Plaster, thicknesses are provided for scratch, brown, finish.
Over frame construction, lath must be used. Over solid substrates—which include concrete masonry, cast-in-place concrete, and precast concrete—lath is sometimes used. When it’s present, three-coat plaster is recommended. Note that frame construction—metal or wood studs—may or may not have sheathing present, but that plaster thickness. It is independent of sheathing. With lath, total plaster thickness is 7/8 inch.
Three-coat work can also be specified for solid plaster bases without metal lath. The correct thickness is then 5/8 inch.
Two-coat applications are only for use over solid plaster bases without metal lath. For unit masonry, that thickness is ½ inch. For cast-in-place or precast concrete, the thickness for two-coat work is 3/8 inch. These are direct-applied systems, meaning that there is no metal lath involved.
It is important to note that the committee in charge of ASTM C 926, the reference document for application. This has decided to keep the term “nominal thickness” in the table’s title for two- and three-coat work. This term takes into account that walls are built to certain tolerances and may not be exactly plumb or plane. The reference to a nominal thickness allows for small variations from an exact dimension. The intent of the specified thickness is to provide a reasonable system that, over many years, has proven itself to be weather resistant and durable.
If you have additional questions about the stucco on your home, please give us a call at (619) 561-7429 or contact us through our web Contact Form. We strive for 100% customer satisfaction and are consistently rated A+ by the San Diego BBB, as well as receiving consistently high ratings from our Home Advisor and Yelp customers.
What’s the cost of a home restucco?
A complete home restucco with traditional 3-coat stucco over lath, and without the use of blown foam insulation. This requires each access point in the wall to be sealed and patched, current market rate around $25.00 – $35.00. That’s per square yard. This is assuming the state of your walls are in average condition, and allows for some patching to be included. (As part of the wall preparation), as well as removal and reinstallation of rain gutters, exterior lighting, and security. Extra costs can come into play if extensive repairs need to be done to damaged areas of the home/FHA. A screen needs to be installed before applying the stucco base coat.
The actual cost of your complete home restucco is determined by each situation. The price can vary by many factors including; thickness, texture, height of job, size of the job, proximity to supply. As well as application technique (hand or spray) and scaffolding requirements for OSHA compliance. For a more exact price, please Contact Us for a free estimate.
If you have additional questions about the stucco on your home, please give us a call at (619) 561-7429. Or contact us through our web Contact Form. We strive for 100% customer satisfaction and are consistently rated A+ by the San Diego BBB. As well as receiving consistently high ratings from our Home Advisor and Yelp customers.
How long does stucco last?
While you can’t truly note the service life of stucco in a particular number of years, correctly preserved stucco. This is more resilient than other typically utilized cladding product. To offer you a concept, stucco has actually been with us because the early Roman times. And some of those structures are still around. At Nurse Stucco we use a 25 year guarantee on our new stucco and restucco work.
If you have additional questions about cleaning the stucco on your home, please give us a call at (619) 561-7429. Or contact us through our web Contact Form. We strive for 100% customer satisfaction and are consistently rated A+ by the San Diego BBB. We also receive consistently high ratings from our Home Advisor and Yelp customers.
The advantages of stucco:
Stucco requires less maintenance than other exterior finishes. You can expect a quieter home with a stucco exterior and a higher degree of energy efficiency. Stucco provides moisture protection while also allowing your home to breathe. Finally, in long-term cost analysis, a stucco home provides the highest return on investment for the owner.
Stucco siding has been used for centuries. The ancient Greeks and Romans painted wall frescoes onto fine-grained hard plaster surfaces made of gypsum, dust, glue.
During the Renaissance, the Italians elaborated stucco techniques, which, in turn, spread throughout Europe. While stucco is not a new building material, the changes made to finishes can make it seem like something rare. A wide array of styles and colors to choose from, as well as different application techniques, make stucco modern, timeless.
If you have additional questions about cleaning the stucco on your home, please give us a call at (619) 561-7429 or contact us through our web Contact Form. We strive for 100% customer satisfaction and are consistently rated A+ by the San Diego BBB, as well as receiving consistently high ratings from our Home Advisor and Yelp customers.
Stucco coating is an inexpensive alternative to other home siding options. It is also a great investment for homeowners in San Diego because it provides great durability, which cuts down costs. Stucco coating has a long life in terms of maintenance – lasting as long as 50 years in some cases! But when you do need to repair a portion of your stucco coating, the process is simple for Nurse Stucco. Our professionals can be done in a timely fashion.
If you have additional questions about the stucco on your home, please give us a call at (619) 561-7429. Or contact us through our web Contact Form. We strive for 100% customer satisfaction and are consistently rated A+ by the San Diego BBB. As well as receiving consistently high ratings from our Home Advisor and Yelp customers.
