Lesson 1Parquet patterns: geometry, material yield, and visual effects of herringbone, chevron, and mosaicYou will examine how herringbone, chevron, and mosaic designs impact wood use, layout work, and room appearance. Learn to choose board sizes, account for waste, and set pattern flow to fit room shapes and natural light in Eritrea.
Herringbone geometry and layout fundamentalsChevron angle choices and directional emphasisMosaic and panel patterns for small spacesMaterial yield, offcuts, and waste calculationsPattern choice versus room proportions and lightLesson 2Physical and mechanical properties of common parquet species: oak, maple, walnut, ashThis part reviews weight, bend strength, and swelling traits of oak, maple, walnut, and ash woods. You will compare how they hold up, cut easily, and suit various parquet sizes and busy home traffic.
Density and weight differences among speciesElasticity, stiffness, and deflection under loadWear layer performance in solid and engineered parquetMachining, splintering, and edge stability by speciesSpecies suitability for residential versus light commercialLesson 3Finish types: penetrating oils, water-based polyurethane, solvent-based polyurethane, hardwax oils — composition and performanceWe compare oils that soak in, water-based and solvent polyurethanes, and hardwax oils. You will grasp their makeup, drying process, shine, and strength to pick the best for each Eritrean project.
Penetrating oils: solids content and curingWater‑based polyurethane layers and additivesSolvent‑based polyurethane and film hardnessHardwax oils: wax fraction and open timeVisual look: sheen, depth, and grain highlightingLesson 4Moisture movement and dimensional stability per species; suitability for concrete subfloorsWe look at water swelling and size stability for main woods and effects on concrete installs. You will check risks of splits, warping, and glue fails in Eritrea's changing dry and wet seasons.
Radial versus tangential shrinkage by speciesEngineered versus solid stability comparisonsMoisture limits for concrete subfloors and slabsVapor barriers, primers, and adhesive selectionSpecies choices for high humidity or slab‑on‑gradeLesson 5Durability and scratch resistance ratings; Janka hardness and impact on family living roomsWe link toughness scores and Janka tests to home use in Eritrea. You will see how dents, marks, and wear show in family rooms, and balance hardness with soft feel, sound, and cost.
Understanding Janka hardness test proceduresHardness versus denting from furniture and toysScratch resistance from pets, sand, and chair legsBalancing hardness, comfort, and acoustic behaviorSpecies selection for busy family living roomsLesson 6Comparative maintenance and refinishing characteristics for each speciesYou will compare oak, maple, walnut, and ash for cleaning, wear handling, and sanding over. Learn service years, sand limits, and how wood tone and grain affect repair looks.
Routine cleaning needs by species hardnessSurface wear patterns and gloss loss over timeSanding limits for solid and engineered parquetColor change impact on patch and board repairsRefinishing intervals in typical home conditionsLesson 7Pattern installation constraints: board sizes, tongue-and-groove orientation, and required cutting allowancesThis part details how designs limit board sizes, groove setup, and cut extras. You will plan layouts that follow maker rules and cut site troubles in Eritrean builds.
Board length and width rules for herringboneChevron angle, leg length, and factory millingTongue‑and‑groove direction and reference linesExpansion gaps and border framing strategiesCutting allowances and waste for complex layoutsLesson 8Finish properties: abrasion resistance, yellowing, VOCs, breathability, recoatability, and repairabilityThis explains how finish makeup gives wear resistance, colour shift, low fumes, air flow, re-layer ease, and fix options. Compare coating and soaking types for home use and care.
Abrasion resistance and traffic class ratingsYellowing behavior of oils and polyurethanesVOCs, indoor air quality, and regulationsFinish breathability and moisture bufferingRecoatability, spot repair, and blending limitsLesson 9Selecting wood species, pattern, and finish to meet client needs: durability, warmth, cleaning, and classic appearance (decision criteria checklist)This gives a clear way to match wood, design, and finish to client wants. Use checks for strength, warm feel, clean ease, style, and future changes in Eritrea.
Clarifying client lifestyle and traffic patternsPrioritizing durability versus visual warmthCleaning effort, stain tolerance, and sheen levelClassic, modern, and rustic style preferencesDecision checklist for final parquet specificationLesson 10Appearance, grain, and color stability: tannins, oxidation, and staining behaviorThis checks how grain, colour, and tannins change parquet looks over time. Predict fade, stains, and hold under Eritrea sun and daily steps.
Grain types and perceived texture in parquet floorsNatural color ranges of major parquet wood speciesTannins and reactions with adhesives and finishesOxidation, UV exposure, and long‑term color changePreventing stains from metals, pets, and household spills
